Structures and room-temperature magnetic properties of entropy-modulated  Gd<sub>2</sub>Co<sub>17</sub> based intermetallic compounds

Dong Xiao-Peng; Zhao Xing; Yin Lin-Han; Peng Si-Qi; Wang Jing-Nan; Guo Yong-Quan

doi:10.7498/aps.72.20221995

Abstract

The entropy-modulated material has been a hot topic due to its unique design concept and excellent properties. However, previous studies of entropy-modulated materials mainly focused on the alloys with simple face-centered cubic, or body-centered cubic, or hexagonal close-packed structures. In this work, the design concept of entropy-modulation is introduced into Gd₂Co₁₇ based intermetallic compound, and the effect of high configuration entropy on the structural stabilization and room-temperature magnetic properties of Gd₂Co₁₇ based intermetallic compound are studied systematically.The samples are prepared by vacuum Arc melting technology in an ultrahigh-purity Ar atmosphere and followed by annealing at 1000 ℃ for 8 days and finally by quenching in cool water. The fine powders are prepared by grinding the ingots in an agate mortar. The powder XRD and SEM-EDS are used to check the crystal structures and chemical compositions. To study the magnetic properties, the column-like samples are prepared by mixing the fine powder and epoxy with a weight ratio of 1∶1, and then aligned under an applied field of 1 T at room temperature.The high configuration entropy is found to play an important role in the structural stabilization and magnetic properties of Gd₂Co₁₇ based medium- and high-entropy intermetallic compounds. The XRD patterns and Rietveld structural refinement results confirm that all the samples are single-phase. The structure depends on the effective atomic radius R_A, the structure of entropized Gd₂Co₁₇ based intermetallics can be stabilized into rhombohedral Th₂Zn₁₇-type with R_A> 1.416 or hexagonal Th₂Ni₁₇-type with R_A< 1.4105. According to thermodynamic calculations of entropized Gd₂Co₁₇ intermeatllics, the atomic radius difference Δr ranges from 0.55% to 1.81%, and the mixing enthalpy $ \Delta {{\boldsymbol{H}}}_{{\rm{m}}{\rm{i}}{\rm{x}}} $ is corresponding to 0 for the rare earth site, –4 to –1 kJ/mol for the transition metal site, and –8.54 to –5.13 kJ/mol between rare earth and transition metal sites. It is suggested that all the thermodynamic parameters meet the criteria for the formation of single-phase medium- and high-entropy intermetallic compounds. The configuration entropy changes from 0.69R to 1.39R. The room temperature magnetic properties are significantly improved by the modulation of entropized design at rare earth and transition metal sublattices. The entropization enhances the saturation moments of all samples, which can be explained with a modified magnetic valence model. The value of ${N}_{{\rm{sp}}}^{\uparrow }$ (the number of the electrons in the unpolarized sp conduction bands) increases from 0.3 to 0.4 after entropization, the indirect interaction between rare earth and transition metal sublattice is increased, the spin moment of s conducting electron as a medium of two sublattices is enhanced, and the magnetic moment is increased. The entropization also induces magnetic anisotropy to transform from basal plane to easy axis for the entropized design at transition metal sublattice and the coercivity of rare earth to increase.

Keywords:

Authors and contacts

School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China

Corresponding author: Guo Yong-Quan, yqguo@ncepu.edu.cn

FullText HTML : translate this paragraph

References

[1]	Yin L H, Guo Y Q, Guo X P 2022 Inorg. Chem. 61 2402 Google Scholar
[2]	Shen B G, Cheng Z H, Liang B, Guo H Q, Zhang J X, Gong H Y, Wang F W, Yan Q W, Zhan W S 1995 Appl. Phys. Lett. 67 1621 Google Scholar
[3]	Coey J M D, Sun H 1990 J. Magn. Magn. Mater. 87 L251 Google Scholar
[4]	易健宏, 彭元东 2004 稀有金属材料与工程 33 337 Google Scholar Yi J H, Peng Y D 2004 Rare Metal Mat. Eng. 33 337 Google Scholar
[5]	Cheng Z H, Shen B G, Liang B, Zhang J X, Wang F W, Zhang S Y, Zhao J G, Zhan W S 1995 J. Appl. Phys. 78 1385 Google Scholar
[6]	Hasebe A, Imai T, Otsuki E 1994 Electr. Eng. Jpn. 114 15 Google Scholar
[7]	Girt E, Altounian Z, Swainson I P 1997 Phys. B Condens. Matter 234 637 Google Scholar
[8]	Girt E, Guillot M, Swainson I P, Krishnan K M, Altounian Z, Thomas G 2000 J. Appl. Phys. 87 5323 Google Scholar
[9]	Liang J K, Huang Q, Santoro A, Liu Q L, Chen X L 1999 J. Appl. Phys. 86 1226 Google Scholar
[10]	Wang S, Fang Y K, Song K K, Zhu X Y, Wang L, Sun W, Pan W, Zhu M G, Li W 2020 J. Rare Earths 38 1224 Google Scholar
[11]	文雪萍, 易健宏, 彭元东, 李丽娅, 叶途明, 夏庆林 2005 粉末冶金材料科学与工程 10 236 Google Scholar Wen X P, Yi J H, Peng Y D, Li L Y, Ye T M, Xia Q L 2005 Mater. Sci. Eng. Powder Metall. 10 236 Google Scholar
[12]	Yeh J W, Chen S K, Lin S J, Gan J Y, Chin T S, Shun T T, Tsau C H, Chang S Y 2004 Adv. Eng. Mater. 6 299 Google Scholar
[13]	Cantor B, Chang I T H, Knight P, Vincent A J B 2004 Mater. Sci. Eng. A 375 213 Google Scholar
[14]	申天展, 宋海洋, 安敏荣 2021 物理学报 70 186201 Google Scholar Shen T Z, Song H Y, An M R 2021 Acta Phys. Sin. 70 186201 Google Scholar
[15]	Zhou N X, Jiang S C, Huang T, Qin M D, Hu T, Luo J 2019 Sci. Bull. 64 856 Google Scholar
[16]	Zhang Y, Yang X, Liaw P K 2012 JOM 64 830 Google Scholar
[17]	Wang J, Zhang Y, Xiao H X, Li L Y, Kou H C, Li J S 2019 Mater. Lett. 240 250 Google Scholar
[18]	鲁一荻, 张骁勇, 侯硕, 何卫锋, 王辉, 吕昭平 2021 稀有金属材料与工程 50 333 Lu Y D, Zhang X Y, Hou S, He W F, Wang H, Lü Z P 2021 Rare Metal Mat. Eng. 50 333
[19]	李蕊轩, 张勇 2017 物理学报 66 177101 Google Scholar Li R X, Zhang Y 2017 Acta Phys. Sin. 66 177101 Google Scholar
[20]	Rost C M, Sachet E, Borman T, Moballegh A, Dickey E C, Hou D, Jones J L, Curtarolo S, Maria J P 2015 Nat. Commun. 6 8485 Google Scholar
[21]	Yadav T P, Mukhopadhyay S, Mishra S S, Mukhopadhyay N K, Srivastava O N 2017 Philos. Mag. Lett. 97 494 Google Scholar
[22]	Yang T, Zhao Y L, Tong Y, Jiao Z B, Wei J, Cai J X, Han X D, Chen D, Hu A, Kai J J, Lu K, Liu Y, Liu C T 2018 Science 362 933 Google Scholar
[23]	He Q, Guo Y Q, Zheng Z Z 2013 Appl. Mech. Mater. 455 66 Google Scholar
[24]	Yin L H, Guo Y Q, Guo X P 2022 J. Magn. Magn. Mater. 563 169883 Google Scholar
[25]	郭新鹏, 郭永权, 王京南, 殷林瀚 2021 华南师范大学学报(自然科学版) 53 1 Google Scholar Guo X P, Guo Y Q, Wang J N, Yin L H 2021 J. South China Norm. Univ. , Nat. Sci. Ed. 53 1 Google Scholar
[26]	Cheng Z H, Shen B G, Zhang J X, Liang B, Guo H Q, Kronmüller H 1997 Appl. Phys. Lett. 70 3467 Google Scholar
[27]	Wei X Z, Hu S J, Zeng D C, Liu Z Y, Brück E, Klaasse J C P, de Boer F R, Buschow K H J 1999 Phys. B Condens. Matter 266 249 Google Scholar
[28]	Sun Z G, Zhang S Y, Zhang H W, Shen B G 2001 J. Alloys Compd. 322 69 Google Scholar
[29]	Fuquan B, Tegus O, Dagula W, Brück E, Klaasse J C P, Buschow K H J 2007 J. Alloys Compd. 431 72 Google Scholar
[30]	Yang X, Zhang Y 2012 Mater. Chem. Phys. 132 233 Google Scholar
[31]	Guo Y Q, Li W, Feng W C, Luo J, Liang J K, He Q J, Yu X J 2005 Appl. Phys. Lett. 86 192513 Google Scholar
[32]	Bean C P, Livingston J D, Rodbell D S 1959 J. Phys. Radium 20 298 Google Scholar
[33]	Buschow K H J 1980 Handb. Ferromagn. Mater. (Vol. 1)(Amsterdam: Elsevier) pp297–414
[34]	Gu Z F, Zeng D C, Liu Z Y, Liang S Z, Klaasse J C P, Bru E, de Boer F R, Buschow K H J 2001 Physica B 304 289 Google Scholar
[35]	Wang J Y, Shen B G, Zhang S Y, Sun Z G, Zhan W S 1999 J. Phys. Appl. Phys. 32 2371 Google Scholar
[36]	Guo Y Q, Feng W C, Li W, Luo J, Liang J K 2007 J. Appl. Phys. 101 023919 Google Scholar

Cited By

图 1 熵调控Gd₂Co₁₇系列样品XRD图谱　(a) Gd₂Co₁₇; (b) Gd₂(Co_1/2Fe_1/2)₁₇; (c) Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇; (d) Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇; (e) (Gd_1/2Tb_1/2)₂Co₁₇; (f) (Gd_1/3Tb_1/3Dy_1/3)₂Co₁₇; (g) (Gd_1/4Tb_1/4Dy_1/4Ho_1/4)₂Co₁₇

Figure 1. The XRD patterns of the entropized Gd₂Co₁₇ intermetallic compounds: (a) Gd₂Co₁₇; (b) Gd₂(Co_1/2Fe_1/2)₁₇; (c) Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇; (d) Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇; (e) (Gd_1/2Tb_1/2)₂Co₁₇; (f) (Gd_1/3Tb_1/3Dy_1/3)₂Co₁₇; (g) (Gd_1/4Tb_1/4Dy_1/4Ho_1/4)₂Co₁₇.

DownLoad: Full-Size Img PowerPoint

图 2 代表性样品的精修XRD图谱　(a) Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇; (b) Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇

Figure 2. Refined XRD pattern of typical samples: (a) Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇; (b) Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇.

DownLoad: Full-Size Img PowerPoint

图 3 代表性样品的SEM图像、EDS图谱　(a) Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇; (b) Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇

Figure 3. SEM image and EDS pattern of typical samples: (a) Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇; (b) Gd₂(Co_1/4Fe_1/4Ni_1/4 Mn_1/4)₁₇.

DownLoad: Full-Size Img PowerPoint

图 4 Gd₂(T₁, T₂, ···, T_n)₁₇系列取向样品XRD图谱　(a) Gd₂Co₁₇; (b) Gd₂(Co_1/2Fe_1/2)₁₇; (c) Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇; (d) Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇

Figure 4. XRD patterns of aligned Gd₂(T₁, T₂, ···, T_n)₁₇ intermetallic compounds: (a) Gd₂Co₁₇; (b) Gd₂(Co_1/2Fe_1/2)₁₇; (c) Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇; (d) Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇.

DownLoad: Full-Size Img PowerPoint

图 5 (R₁, R₂, ···, R_n)₂Co₁₇系列取向样品XRD图谱　(a) (Gd_1/2Tb_1/2)₂Co₁₇; (b) (Gd_1/3Tb_1/3Dy_1/3)₂Co₁₇; (c) (Gd_1/4Tb_1/4Dy_1/4Ho_1/4)₂Co₁₇

Figure 5. XRD patterns of aligned (R₁, R₂, ···, R_n)₂Co₁₇ intermetallic compounds: (a) (Gd_1/2Tb_1/2)₂Co₁₇; (b) (Gd_1/3Tb_1/3Dy_1/3)₂Co₁₇;(c) (Gd_1/4Tb_1/4Dy_1/4Ho_1/4)₂Co₁₇.

DownLoad: Full-Size Img PowerPoint

图 6 熵调控Gd₂Co₁₇系列取向样品平行和垂直于外加磁场方向的磁滞回线　(a)Gd₂(Co_1/2Fe_1/2)₁₇; (b) Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇; (c) Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇; (d) (Gd_1/2Tb_1/2)₂Co₁₇; (e) (Gd_1/3Tb_1/3Dy_1/3)₂Co₁₇; (f) (Gd_1/4Tb_1/4Dy_1/4Ho_1/4)₂Co₁₇

Figure 6. Hysteresis loops of entropized Gd₂Co₁₇ samples with magnetic aligned direction parallel and perpendicular to the direction of applied magnetic field: (a) Gd₂(Co_1/2Fe_1/2)₁₇; (b) Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇; (c) Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇; (d) (Gd_1/2Tb_1/2)₂Co₁₇; (e) (Gd_1/3Tb_1/3Dy_1/3)₂Co₁₇; (f) (Gd_1/4Tb_1/4Dy_1/4Ho_1/4)₂Co₁₇.

DownLoad: Full-Size Img PowerPoint

图 7 Gd₂(T₁, T₂, ···, T_n)₁₇系列取向样品的磁晶各向异性场　(a) Gd₂(Co_1/2Fe_1/2)₁₇; (b) Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇; (c) Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇

Figure 7. Magnetic anisotropy field of field aligned Gd₂(T₁, T₂, ···, T_n)₁₇: (a) Gd₂(Co_1/2Fe_1/2)₁₇; (b) Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇; (c) Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇.

DownLoad: Full-Size Img PowerPoint

图 8 Gd₂Co₁₇系列取向样品的拟合磁化曲线　(a) Gd₂(Fe_1/2Co_1/2)₁₇; (b) Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇; (c) Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇; (d) (Gd_1/2Tb_1/2)₂Co₁₇; (e) (Gd_1/3Tb_1/3Dy_1/3)₂Co₁₇; (f) (Gd_1/4Tb_1/4Dy_1/4Ho_1/4)₂Co₁₇

Figure 8. Fitted magnetization curves of field aligned entropized Gd₂Co₁₇: (a) Gd₂(Co_1/2Fe_1/2)₁₇; (b) Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇; (c) Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇; (d) (Gd_1/2Tb_1/2)₂Co₁₇; (e) (Gd_1/3Tb_1/3Dy_1/3)₂Co₁₇; (f) (Gd_1/4Tb_1/4Dy_1/4Ho_1/4)₂Co₁₇.

DownLoad: Full-Size Img PowerPoint

表 1 熵调控Gd₂Co₁₇系列样品热力学参数

Table 1. Thermodynamic parameters of entropized Gd₂Co₁₇ intermetallic compounds.

样品	原子半径差 ${{\Delta } }r$/%	${\rm{混} }{\rm{合} }{\rm{焓} }\Delta {{\boldsymbol{H}}}_{ {\rm{m} }{\rm{i} }{\rm{x} } }$/(kJ·mol^–1)			混合熵 $\Delta {S}_{ {\rm{mix} } } /R$
样品	原子半径差 ${{\Delta } }r$/%	稀土位	金属位	稀土位-金属位	混合熵 $\Delta {S}_{ {\rm{mix} } } /R$
Gd₂Co₁₇	—	—	—	–8.29	0
Gd₂(Co_1/2Fe_1/2)₁₇	0.79	—	–1.00	–5.13	0.69
Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇	0.99	—	–1.33	–7.85	1.10
Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇	1.81	—	–4.00	–8.38	1.39
(Gd_1/2Tb_1/2)₂Co₁₇	0.55	0	—	–8.48	0.69
(Gd_1/3Tb_1/3Dy_1/3)₂Co₁₇	0.69	0	—	–8.54	1.10
(Gd_1/4Tb_1/4Dy_1/4Ho_1/4)₂Co₁₇	0.83	0	—	–8.48	1.39

DownLoad: CSV

表 2 熵调控Gd₂Co₁₇系列样品晶格参数、品质因子和可信度因子

Table 2. Lattice parameter, merit factors M and smith factor F of entropized Gd₂Co₁₇ intermetallic compounds.

样品	a/Å	c/Å	V/Å³	M(20)	F(20)
Gd₂Co₁₇	8.378(0)	12.206(6)	742.0(0)	28	27
Gd₂(Co_1/2Fe_1/2)₁₇	8.458(0)	12.409(6)	768.8(2)	17	14
Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇	8.444(4)	12.254(1)	756.6(7)	23	23
Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇	8.507(0)	8. 267(8)	518.1(7)	49	39
(Gd_1/2Tb_1/2)₂Co₁₇	8.332(3)	8.133(1)	489.0(1)	46	52
(Gd_1/3Tb_1/3Dy_1/3)₂Co₁₇	8.363(1)	12.203(0)	739.1(5)	28	28
(Gd_1/4Tb_1/4Dy_1/4Ho_1/4)₂Co₁₇	8.333(6)	8.125(6)	488.7(1)	44	45

DownLoad: CSV

表 3 选取样品的元素组成

Table 3. Element compositions of typical samples.

元素	Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇		Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇
元素	质量百分比/%	原子百分比/%	质量百分比/%	原子百分比/%
Gd	24.5	10.6	26.0	11.3
Co	26.1	30.3	18.9	21.9
Fe	24.0	29.4	16.9	20.7
Ni	25.4	29.6	20.1	23.4
Mn	—	—	18.1	22.7

DownLoad: CSV

表 4 具有菱方结构的样品的精修晶体学数据

Table 4. Refined crystallographic data of samples with rhombohedral structure.

样品		Gd₂Co₁₇	Gd₂(Co_1/2Fe_1/2)₁₇	Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇	(Gd_1/3Tb_1/3Dy_1/3)₂Co₁₇
	空间群	${R}\bar3{m}$	${R}\bar3{m}$	${R}\bar{\text{3} }{m}$	${R}\bar3{m}$
	a/Å	8.375(2)	8.454(5)	8.444(7)	8.358(0)
	c/Å	12.200(4)	12.413(7)	12.254(3)	12.185(7)
	V/Å³	741.131(2)	768.436(1)	756.817(0)	737.200(9)
	稀土位	Gd	Gd	Gd	Gd, Tb, Dy
	6c (0, 0, z)	(z = 0.34369)	(z = 0.34188)	(z = 0.33731)	(z = 0.34197)
	占位率/%	100	100	100	各33.33
	金属位	Co	Co, Fe	Fe, Co, Ni	Co
	6c (0, 0, z)	(z = 0.09431)	(z = 0.08016)	(z = 0.08100)	(z = 0.09567)
	占位率/%	100	各50	各33.33	100
	9d (1/2, 0, 1/2)	—	—	—	—
	占位率/%	100	各50	各33.33	100
	18f (x, 0, 0)	(x = 0.28942)	(x = 0.30352)	(x = 0.30607)	(x = 0.29175)
	占位率/%	100	各50	各33.33	100
	18h (x, 1–x, z)	(x = 0.16826; z = 0.48728)	(x = 0.50226; z = 0.15830)	(x = 0.16629; z = 0.49090)	(x = 0.16783; z = 0.48701)
	占位率/%	100	各50	各33.33	100
	R_p/%	5.144	8.110	8.830	5.605
	R_WP/%	6.865	10.611	12.690	7.057

DownLoad: CSV

表 5 具有六方结构的样品的精修晶体学数据

Table 5. Refined crystallographic data of samples with hexagonal structure.

样品	Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇	(Gd_1/2Tb_1/2)₂Co₁₇	(Gd_1/4Tb_1/4Dy_1/4Ho_1/4)₂Co₁₇
空间群	P6₃/mmc	P6₃/mmc	P6₃/mmc
a/Å	8.501(6)	8.329(5)	8.332(9)
c/Å	8.265(3)	8.130(4)	8.124(4)
V/Å³	517.357(3)	488.512(1)	488.561(0)
稀土位	Gd	Gd, Tb	Gd, Tb, Dy, Ho
2b (0, 0, 1/4)	—	—	—
占位率/%	100	各50	各25
2d (1/3, 2/3, 3/4)	—	—	—
占位率/%	100	各50	各25
金属位	Fe, Co, Ni, Mn	Co	Co
4f (1/3, 2/3, z)	(z = 0.14285)	(z = 0.12127)	(z = 0.13757)
占位率/%	各25	100	100
6g (1/2, 0, 0)	—	—	—
占位率/%	各25	100	100
12j (x, y, 1/4)	(x = 0.32333; y = –0.02248)	(x = 0.33032; y = 0.96090)	(x = 0.32409; y = 0.96806)
占位率/%	各25	100	100
12k (x, 2x, z)	(x = 0.16182; z = –0.11890)	(x = 0.16585; z = 0.98326)	(x = 0.16655; z = 0.98716)
占位率/%	各25	100	100
R_p/%	7.006	8.07	9.07
R_WP/%	8.942	10.50	11.80

DownLoad: CSV

表 6 熵调控Gd₂Co₁₇系列样品有效原子半径R_A

Table 6. Effective radius ratio R_A of entropized Gd₂Co₁₇ intermetallic compounds.

样品	晶体结构	有效原子半径R_A
Gd₂Co₁₇	菱方	1.4262
Gd₂(Co_1/2Fe_1/2)₁₇	菱方	1.4330
Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇	菱方	1.4334
Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇	六方	1.3996
(Gd_1/2Tb_1/2)₂Co₁₇	六方	1.4166
(Gd_1/3Tb_1/3Dy_1/3)₂Co₁₇	菱方	1.4105
(Gd_1/4Tb_1/4Dy_1/4Ho_1/4)₂Co₁₇	六方	1.4056

DownLoad: CSV

表 7 熵调控Gd₂Co₁₇系列取向样品磁化曲线拟合参数

Table 7. Results of fitted magnetization parameters of field aligned entropized Gd₂Co₁₇.

取向样品	拟合度	Nμ/(emu·g^–1)	Nμ/μ_B
Gd₂(Co_1/2Fe_1/2)₁₇	0.99887	109.56395±0.02882	25.30
Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇	0.99630	74.23084±0.03279	17.19
Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇	0.99644	68.97675±0.02946	15.87
(Gd_1/2Tb_1/2)₂Co₁₇	0.99985	104.73245±0.01038	24.71
(Gd_1/3Tb_1/3Dy_1/3)₂Co₁₇	0.99844	71.71314±0.01977	16.96
(Gd_1/4Tb_1/4Dy_1/4Ho_1/4)₂Co₁₇	0.99837	83.60305±0.02565	19.81

DownLoad: CSV

表 8 R₂T₁₇金属间化合物的室温磁性能

Table 8. Magnetic properties of R₂T₁₇ at room temperature.

二元R₂T₁₇	晶体结构	饱和磁矩Nμ/μ_B	居里温度T_c/K	磁各向异性
Gd₂Co₁₇	菱方	13.5—14.4	1209—1240	基面
Gd₂Fe₁₇	六方	21—21.5	460—485	基面
Gd₂Ni₁₇	六方	8.8—9.36	187—205	—
Tb₂Co₁₇	菱方	8.4—10.7	1180—1195	基面
Dy₂Co₁₇	六方	7—8.3	1152—1188	基面
Ho₂Co₁₇	六方	5.8—7.7	1173—1183	基面
熵调控Gd₂Co₁₇	晶体结构	饱和磁矩Nμ/μ_B	理论磁矩Nμ/μ_B	磁各向异性
Gd₂(Co_1/2Fe_1/2)₁₇	菱方	25.30	17.25—17.95	易轴
Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇	菱方	17.19	14.43—15.09	易轴
Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇	六方	15.87	—	易轴
(Gd_1/2Tb_1/2)₂Co₁₇	六方	24.71	10.95—12.55	基面
(Gd_1/3Tb_1/3Dy_1/3)₂Co₁₇	菱方	16.96	9.63—12.87	基面
(Gd_1/4Tb_1/4Dy_1/4Ho_1/4)₂Co₁₇	六方	19.81	8.68—10.28	基面

DownLoad: CSV

表 9 熵调控Gd₂Co₁₇系列样品饱和磁矩计算结果

Table 9. Calculated moments of entropized Gd₂Co₁₇ intermetallic.

样品	实验磁矩/μ_B	理论磁矩/μ_B	$ {N}_{{\rm{s}}{\rm{p}}}^{\uparrow } $
Gd₂Co₁₇	13.5—14.4	14.40	0.30
Gd₂(Co_1/2Fe_1/2)₁₇	25.30	26.70	0.40
Gd₂(Co_1/3Fe_1/3Ni_1/3)₁₇	17.19	18.20	0.40
Gd₂(Co_1/4Fe_1/4Ni_1/4Mn_1/4)₁₇	15.87	13.95	0.40

DownLoad: CSV

[1]	Yin L H, Guo Y Q, Guo X P 2022 Inorg. Chem. 61 2402 Google Scholar
[2]	Shen B G, Cheng Z H, Liang B, Guo H Q, Zhang J X, Gong H Y, Wang F W, Yan Q W, Zhan W S 1995 Appl. Phys. Lett. 67 1621 Google Scholar
[3]	Coey J M D, Sun H 1990 J. Magn. Magn. Mater. 87 L251 Google Scholar
[4]	易健宏, 彭元东 2004 稀有金属材料与工程 33 337 Google Scholar Yi J H, Peng Y D 2004 Rare Metal Mat. Eng. 33 337 Google Scholar
[5]	Cheng Z H, Shen B G, Liang B, Zhang J X, Wang F W, Zhang S Y, Zhao J G, Zhan W S 1995 J. Appl. Phys. 78 1385 Google Scholar
[6]	Hasebe A, Imai T, Otsuki E 1994 Electr. Eng. Jpn. 114 15 Google Scholar
[7]	Girt E, Altounian Z, Swainson I P 1997 Phys. B Condens. Matter 234 637 Google Scholar
[8]	Girt E, Guillot M, Swainson I P, Krishnan K M, Altounian Z, Thomas G 2000 J. Appl. Phys. 87 5323 Google Scholar
[9]	Liang J K, Huang Q, Santoro A, Liu Q L, Chen X L 1999 J. Appl. Phys. 86 1226 Google Scholar
[10]	Wang S, Fang Y K, Song K K, Zhu X Y, Wang L, Sun W, Pan W, Zhu M G, Li W 2020 J. Rare Earths 38 1224 Google Scholar
[11]	文雪萍, 易健宏, 彭元东, 李丽娅, 叶途明, 夏庆林 2005 粉末冶金材料科学与工程 10 236 Google Scholar Wen X P, Yi J H, Peng Y D, Li L Y, Ye T M, Xia Q L 2005 Mater. Sci. Eng. Powder Metall. 10 236 Google Scholar
[12]	Yeh J W, Chen S K, Lin S J, Gan J Y, Chin T S, Shun T T, Tsau C H, Chang S Y 2004 Adv. Eng. Mater. 6 299 Google Scholar
[13]	Cantor B, Chang I T H, Knight P, Vincent A J B 2004 Mater. Sci. Eng. A 375 213 Google Scholar
[14]	申天展, 宋海洋, 安敏荣 2021 物理学报 70 186201 Google Scholar Shen T Z, Song H Y, An M R 2021 Acta Phys. Sin. 70 186201 Google Scholar
[15]	Zhou N X, Jiang S C, Huang T, Qin M D, Hu T, Luo J 2019 Sci. Bull. 64 856 Google Scholar
[16]	Zhang Y, Yang X, Liaw P K 2012 JOM 64 830 Google Scholar
[17]	Wang J, Zhang Y, Xiao H X, Li L Y, Kou H C, Li J S 2019 Mater. Lett. 240 250 Google Scholar
[18]	鲁一荻, 张骁勇, 侯硕, 何卫锋, 王辉, 吕昭平 2021 稀有金属材料与工程 50 333 Lu Y D, Zhang X Y, Hou S, He W F, Wang H, Lü Z P 2021 Rare Metal Mat. Eng. 50 333
[19]	李蕊轩, 张勇 2017 物理学报 66 177101 Google Scholar Li R X, Zhang Y 2017 Acta Phys. Sin. 66 177101 Google Scholar
[20]	Rost C M, Sachet E, Borman T, Moballegh A, Dickey E C, Hou D, Jones J L, Curtarolo S, Maria J P 2015 Nat. Commun. 6 8485 Google Scholar
[21]	Yadav T P, Mukhopadhyay S, Mishra S S, Mukhopadhyay N K, Srivastava O N 2017 Philos. Mag. Lett. 97 494 Google Scholar
[22]	Yang T, Zhao Y L, Tong Y, Jiao Z B, Wei J, Cai J X, Han X D, Chen D, Hu A, Kai J J, Lu K, Liu Y, Liu C T 2018 Science 362 933 Google Scholar
[23]	He Q, Guo Y Q, Zheng Z Z 2013 Appl. Mech. Mater. 455 66 Google Scholar
[24]	Yin L H, Guo Y Q, Guo X P 2022 J. Magn. Magn. Mater. 563 169883 Google Scholar
[25]	郭新鹏, 郭永权, 王京南, 殷林瀚 2021 华南师范大学学报(自然科学版) 53 1 Google Scholar Guo X P, Guo Y Q, Wang J N, Yin L H 2021 J. South China Norm. Univ. , Nat. Sci. Ed. 53 1 Google Scholar
[26]	Cheng Z H, Shen B G, Zhang J X, Liang B, Guo H Q, Kronmüller H 1997 Appl. Phys. Lett. 70 3467 Google Scholar
[27]	Wei X Z, Hu S J, Zeng D C, Liu Z Y, Brück E, Klaasse J C P, de Boer F R, Buschow K H J 1999 Phys. B Condens. Matter 266 249 Google Scholar
[28]	Sun Z G, Zhang S Y, Zhang H W, Shen B G 2001 J. Alloys Compd. 322 69 Google Scholar
[29]	Fuquan B, Tegus O, Dagula W, Brück E, Klaasse J C P, Buschow K H J 2007 J. Alloys Compd. 431 72 Google Scholar
[30]	Yang X, Zhang Y 2012 Mater. Chem. Phys. 132 233 Google Scholar
[31]	Guo Y Q, Li W, Feng W C, Luo J, Liang J K, He Q J, Yu X J 2005 Appl. Phys. Lett. 86 192513 Google Scholar
[32]	Bean C P, Livingston J D, Rodbell D S 1959 J. Phys. Radium 20 298 Google Scholar
[33]	Buschow K H J 1980 Handb. Ferromagn. Mater. (Vol. 1)(Amsterdam: Elsevier) pp297–414
[34]	Gu Z F, Zeng D C, Liu Z Y, Liang S Z, Klaasse J C P, Bru E, de Boer F R, Buschow K H J 2001 Physica B 304 289 Google Scholar
[35]	Wang J Y, Shen B G, Zhang S Y, Sun Z G, Zhan W S 1999 J. Phys. Appl. Phys. 32 2371 Google Scholar
[36]	Guo Y Q, Feng W C, Li W, Luo J, Liang J K 2007 J. Appl. Phys. 101 023919 Google Scholar

[1]	Chen Zhi-Peng, Ma Ya-Nan, Lin Xue-Ling, Pan Feng-Chun, Xi Li-Ying, Ma Zhi, Zheng Fu, Wang Yan-Qing, Chen Huan-Ming. Electronic structure and mechanical properties of Nb-doped -TiAl intermetallic compound. Acta Physica Sinica, 2017, 66(19): 196101. doi: 10.7498/aps.66.196101
[2]	Zhang Lu-Shan, Yu Hong-Fei, Guo Yong-Quan. Structural analysis of FeTe alloy and its superconducting film preparation. Acta Physica Sinica, 2012, 61(1): 016101. doi: 10.7498/aps.61.016101
[3]	Zhang Dong, Lu Xi-Rui, Yang Yan-Kai, Cui Chun-Long, Chen Meng-Jun. Capability of resisting γ-ray irradiation and Rietveld structurerefinement of zircon. Acta Physica Sinica, 2011, 60(7): 078901. doi: 10.7498/aps.60.078901
[4]	Yu Hong-Fei, Zhang Lu-Shan, Wu Xiao-Hui, Guo Yong-Quan. Structure and electromagnetic transport properties of compound NdNi2Ge2. Acta Physica Sinica, 2011, 60(10): 107306. doi: 10.7498/aps.60.107306
[5]	Liu Fu-Sheng, Chen Xian-Peng, Xie Hua-Xing, Ao Wei-Qin, Li Jun-Qin. Negative thermal expansion of Sc2－xGaxW3O12 solid solution. Acta Physica Sinica, 2010, 59(5): 3350-3356. doi: 10.7498/aps.59.3350
[6]	Hao Yan-Ming, Wang Ling-Ling, Yan Da-Li, An Li-Qun. Structure and magnetic properties of Sm2Fe17-xCrxcompound prepared by arc melting. Acta Physica Sinica, 2009, 58(10): 7222-7226. doi: 10.7498/aps.58.7222
[7]	Chen Yi, Shen Jiang. Theoretical study on structural properties for rare earth intermetallic compounds RFe2Zn20-xInx. Acta Physica Sinica, 2009, 58(13): 146-S150. doi: 10.7498/aps.58.146
[8]	Zhang Li-Gang, Chen Jing, Zhu Bo-Quan, Li Ya-Wei, Wang Ru-Wu, Li Yun-Bao, Zhang Guo-Hong, Li Yu. Study on the magnetic entropy change and magnetic phase transition of NaZn13-type LaFe13－xAlxCy compounds. Acta Physica Sinica, 2006, 55(10): 5506-5510. doi: 10.7498/aps.55.5506
[9]	Shen Jun, Li Yang-Xian, Hu Feng-Xia, Wang Guang-Jun, Zhang Shao-Ying. Magnetic properties and magnetic entropy change of Ce2Fe16Al near Curie temperature. Acta Physica Sinica, 2003, 52(5): 1250-1254. doi: 10.7498/aps.52.1250
[10]	Wang Wen-Quan, Yan Yu, Wang Xiang-Qun, Wang Xue-Feng, Su Feng, Jin Han-Min. Structural and magnetic properties of Gd3 Co29-xCrx compounds. Acta Physica Sinica, 2003, 52(3): 647-651. doi: 10.7498/aps.52.647
[11]	Zhang Li-Gang, Li Yun-Biao, Zhao Shao-Ying, Shen Bao-Gen. . Acta Physica Sinica, 2002, 51(4): 913-916. doi: 10.7498/aps.51.913
[12]	GUO GUANG-HUA, R.Z.LEVITIN. SPONTANEOUS AND FIELD-INDUCED MAGNETIC PHASE TRANSITIONS IN THE INTERMETALLIC COMPOUND DyMn2Ge2. Acta Physica Sinica, 2001, 50(2): 313-318. doi: 10.7498/aps.50.313
[13]	GUO GUANG-HUA, R.Z.LEVITIN. SPONTANEOUS MAGNETIC PHASE TRANSITION AND MAGNETOELASTIC ANOMALIES AT TRANSITION S IN INTERMETALLIC COMPOUNDS RMn2Ge2 (R=La,Pr,Nd,Sm,Gd,Tb, Y). Acta Physica Sinica, 2000, 49(9): 1838-1845. doi: 10.7498/aps.49.1838
[14]	. . Acta Physica Sinica, 2000, 49(2): 355-360. doi: 10.7498/aps.49.355
[15]	Yang Dong, Wang Jian-Li, Tang Ning, Shen Yu-Ping, Yang Fu-Ming. Structures and Magnetic Properties of 3:29-Type Gd-Fe-Co-Cr Compounds. Acta Physica Sinica, 1999, 48(13): 80-86. doi: 10.7498/aps.48.80
[16]	ZHANG LI-GANG, ZHANG SHAO-YING, ZHANG HONG-WEI. STRUCTURAL AND MAGNETIC PROPERTIES OF Gd Fe Co Ga COMPOUNDS WITH 2∶17 TYPE STRUCTURE. Acta Physica Sinica, 1997, 46(11): 2241-2249. doi: 10.7498/aps.46.2241
[17]	YANG YING-CHANG, KONG LIN-SHU, ZHANG XIAO-DONG, YAO JIA-BIN, CHENG BEN-PEI, KONG JIE. STRUCTURE AND INTRINSIC MAGNETIC PROPERTIES OF R2Fe17C COMPOUNDS. Acta Physica Sinica, 1993, 42(7): 1186-1192. doi: 10.7498/aps.42.1186
[18]	Yang Ying-chang; Kong Lin-shu; Zhang yiao-dong; Jiao Jia-bin; Cheng Ben-pei;Kong Jie. STRUCTURE AND INTRINSIC MAGNETIC PROPERTIES OF R_2Fe_17_C COMPOUNDS. Acta Physica Sinica, 1991, 40(7): 1186-1192. doi: 10.7498/aps.40.1186
[19]	YANG YING-CHANG, KONG LIN-SHU, CHENG BEN-PEI. STRUCTURAL AND MAGNETIC PROPERTIES OF Sm (Ti, Fe)12 INTERMETALLIC COMPOUNDS. Acta Physica Sinica, 1988, 37(9): 1534-1539. doi: 10.7498/aps.37.1534
[20]	GUO HOI-QUN, ZHAO JIAN-GAO, WANG ZHEN-XI, XIE KAN, SHEN BAO-GEN. THE GIANT MAGNETOSTRICTION OF (Tb,Dy)Fe₂ ALLOYS. Acta Physica Sinica, 1979, 28(1): 121-124. doi: 10.7498/aps.28.121

Catalog

Vol. 72, Issue 10 - 2023-05-20

Metrics

Abstract views: 3859
PDF Downloads: 64
Cited By: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

Search

Article

留言板

Structures and room-temperature magnetic properties of entropy-modulated Gd₂Co₁₇ based intermetallic compounds

Abstract

Authors and contacts

Corresponding author: Guo Yong-Quan, yqguo@ncepu.edu.cn

FullText HTML : translate this paragraph

References

Cited By

Catalog

Metrics

Authors

Referees

About Journal

About

Search

Article

留言板

Structures and room-temperature magnetic properties of entropy-modulated Gd2Co17 based intermetallic compounds

Abstract

Authors and contacts

Corresponding author: Guo Yong-Quan, yqguo@ncepu.edu.cn

FullText HTML : translate this paragraph

References

Cited By

Catalog

Metrics

Publishing process

Authors

Referees

About Journal

About

Structures and room-temperature magnetic properties of entropy-modulated Gd₂Co₁₇ based intermetallic compounds