Optical absorption and thermionic emission mechanism of multi-functional La1–x Srx B6 hexaborides

Zhang Hong-Yan; Bao Li-Hong; Chao Luo-Meng; Zhao Feng-Qi; Liu Zi-Zhong

doi:10.7498/aps.70.20211069

Abstract

The optical absorption property of the nanocrystalline La_1–x Sr_x B₆ powder and thermionic emission property of the La_1–x Sr_x B₆ polycrystalline bulk are investigated. As a result, the transmission wavelength of LaB₆ is red-shifted from 591 nm to 658 nm with the increase of Sr doping content. The emission tests indicate that the thermionic emission current density of La_1–x Sr_x B₆ polycrystalline bulk increases from 2.3 A/cm² to 19.36 A/cm² with the increase of La doping content under an applied voltage of 2000 V. The first-principle calculation results reveal that Sr doping LaB₆ leads plasma frequency energy and Fermi level to decrease, resulting in the tunable characteristics of transmission wavelength and enhancement of thermionic emission. Therefore, the Sr-doped LaB₆ as a multifunctional ceramic has a potential application in the field of optical filter or becomes a promising cathode for microwave device.

Keywords:

Authors and contacts

1.
College of Physics and Electronic Information, Inner Mongolia Normal University, Hohhot, 010022, China
2.
College of Science, Inner Mongolia University of Science Technology, Baotou 014010, China
3.
College of Chemistry and Environment Science, Inner Mongolia Normal University, Hohhot 010022, China

Corresponding author: Bao Li-Hong, baolihong@imnu.edu.cn

Funds: Project supported by the Natural Science Foundation of Inner Mongolia Autonomous Region, China (Grant No. 2019LH05001) and the National Natural Science Foundation of China (Grant No. 51662034).

[1]	Kirley M P, Novakovic B, Sule N, Weber M J, Knezevic I, Booske J H 2012 J. Appl. Phys. 111 063717 Google Scholar
[2]	Xu J Q, Hou G H, Li H Q, Zhai T Y, Dong B P, Yan H L, Wang Y R, Yu B H, Bando Y, Golberg D 2013 NPG Asia Mater. 5 547 Google Scholar
[3]	Kumari M, Gautam S, Shah P V, Pal S, Ojha U S, Kumar A, Naik A A, Rawat J S, Chaudhury P K, Harsh, Tandon R P 2012 Appl. Phys. Lett. 101 4995 Google Scholar
[4]	Yuan Y F, Zhang L, HuLJ, Wang W, Min G H 2011 J. Solid State Chem. 184 3364 Google Scholar
[5]	Tang H B, Su Y C, Tan J, Hu T, GongJY, Xiao L H 2014 Superattice Microst. 75 908 Google Scholar
[6]	Chao L M, Bao L H, Wei W, Tegus O, Zhang Z D 2016 J. Alloys. Compd. 672 419 Google Scholar
[7]	Mattox T M, Agrawal A, Milliron D J 2015 Chem. Mater. 27 6620 Google Scholar
[8]	Chen M C, Lin Z W, Ling M H 2016 Acs Nano 10 93 Google Scholar
[9]	Chen C J, Chen D H 2012 Chem. Eng. 180 337 Google Scholar
[10]	Tang S L, Huang W C, Gao Y, An N, Wu Y D, Yang B, Yan M, Cao J Y, Guo C S 2021 J. Mater. Chem. B 9 4380 Google Scholar
[11]	Takeda H, Kuno H, Adachi K 2008 J. Am. Ceram. Soc. 91 2897 Google Scholar
[12]	Schelm S, Smith G B 2003 Appl. Phys. Lett. 82 4346 Google Scholar
[13]	Adachi K, Miratsu M, Asahi T 2010 J. Mater. Res. 25 510 Google Scholar
[14]	Schelm S, Smith G B, Grrett P D, Fisher W K 2005 J. Appl. Phys. 97 124314 Google Scholar
[15]	Smith G B 2002 Mater. Forum. 26 20
[16]	Bao L H, Qi X P, Ta N, Chao L M, Tegus O 2016 Phys. Chem. Chem. Phys. 18 19165 Google Scholar
[17]	Bao L H, Chao L M, Wei W, Tegus O 2015 Mater. Lett. 139 187 Google Scholar
[18]	Bao L H, Qi X P, Bao T N, Tegus O 2018 J. Alloy. Compd. 731 332 Google Scholar
[19]	Zhou S L, Zhang J X, Bao L H, Yu X G, Hu Q L, Hu D Q 2014 J. Alloys. Compd. 611 130 Google Scholar
[20]	Hasan M M, Cuskelly D, Sugo H, Kisi E H 2015 J. Alloy. Compd. 636 37 Google Scholar
[21]	Hohenberg P, Kohn W 1964 Phys. Rev. 136 B864
[22]	Vanderbilt D 1990 Phys. Rev. B 41 7892 Google Scholar
[23]	Perdew J P, Burke K, Ernzerhof M 1996 Phys. Rev. Lett. 77 3865 Google Scholar
[24]	Chao L M, Bao L H, Shi J J, Wei W, Tegus O, Zhang Z D 2015 J. Alloy. Compd. 622 618 Google Scholar
[25]	Liu H L, Zhang X, Ning S Y 2017 Vacuum 143 245 Google Scholar
[26]	Bao L H, Ming M, Tegus O 2015 J. Inorg. Mater. 30 1110 Google Scholar
[27]	Xiao L H, Su Y C, Zhou X Z, Chen H Y, Tan J, Hu T, Yan J, Peng P 2012 Appl. Phys. Lett. 101 041913 Google Scholar
[28]	Kimura S, Nanba T, Kunii S, Kasuya T 1990 Phys. Rev. B 59 3388 Google Scholar
[29]	Kauer E 1963 Phys. Lett. 7 171 Google Scholar
[30]	Kimura S, Nanba T, Kunii S, Suzuki T, Kasuya T 1990 Solid State Commun. 75 717 Google Scholar
[31]	Bao L H, Qi X P, Ta N, Chao L M, Tegus O 2016 Cryst. Eng. Comm. 18 1223 Google Scholar
[32]	Xin S W, Liu S C, Wang N, Han X Y, Wang L M, Xu B, Tian Y J, Liu Z Y, He J L, Yu D L 2011 J. Alloy. Compd. 509 7927 Google Scholar
[33]	Zheng S, Zou Z, Min G, Yu H S, Han J D, Wang W T 2002 J. Mater. Sci. Lett. 21 313 Google Scholar
[34]	Wang J, Zhu C, Meng F S, Liu G B, Gu Y, Wang H D, Gao S S, Wang K M 2018 Mod. Phys. Lett. B 32 1850007 Google Scholar
[35]	Futamoto M, Nakazawa M, Kawabe U 1980 Surf. Sci 100 470 Google Scholar
[36]	Swanson L W, Mcneely D R 1979 Surf. Sci 83 11 Google Scholar
[37]	周身林, 张久兴, 刘丹敏 2010 强激光与离子束 22 171 Google Scholar Zhou S L, Zhang J X, Liu D M 2010 High Power Laser and Particle Beams 22 171 Google Scholar

Cited By

图 1 La_0.825Sr_0.125B₆晶体结构示意图

Figure 1. Schematic diagram of the La_0.825Sr_0.125B₆ crystal structure.

DownLoad: Full-Size Img PowerPoint

图 2 (a)不同反应温度下制备的La_0.4Sr_0.6B₆纳米颗粒的XRD谱图; (b) 1150 ℃下制备的La_1–x Sr_x B₆纳米颗粒的XRD谱图

Figure 2. (a) XRD pattern of La_0.4Sr_0.6B₆ nanoparticles prepared at different reaction temperatures; (b) XRD pattern of La_1–x Sr_x B₆ nanoparticles prepared at 1150 ℃.

DownLoad: Full-Size Img PowerPoint

图 3 不同反应温度下所制备的纳米La_1–x Sr_x B₆ (x = 0.2, 0.4, 0.6, 0.8)粉末SEM照片　(a)—(d)反应温度为1150 ℃; (e)—(h)反应温度为1200℃. 最底层为纳米La_0.4Sr_0.6B₆粉末元素分布及EDS分析

Figure 3. SEM image of La_1–x Sr_x B₆ (x = 0.2, 0.4, 0.6, 0.8) nanoparticles (a)−(d) prepared at 1150 ℃, (e)−(h) prepared at 1200 ℃. The lowest side shows the elements mapping and EDS analysis of La_0.4Sr_0.6B₆ nanoparticles.

DownLoad: Full-Size Img PowerPoint

图 4 纳米La_0.4Sr_0.6B₆粉末的(a) TEM照片、(b)单颗粒形貌照片、(c) HRTEM照片; (d)图(c)的傅里叶(FFT)变换; (e)—(g)所选择的单晶颗粒的La, Sr, B元素分布图

Figure 4. (a) TEM image of La_0.4Sr_0.6B₆ nanoparticles; (b) selected single crystal morphology; (c) HRTEM image for selected single crystal; (d) indexing FFT patterns from panel (c); (e)−(g) La , Sr , B element mapping for selected single crystal .

DownLoad: Full-Size Img PowerPoint

图 5 纳米La_1–x Sr_x B₆ (x = 0 (a), 0.2 (b), 0.4 (c), 0.6 (d), 0.8 (e))粉末的光学吸收曲线

Figure 5. Optical absorption spectrum of La_1–x Sr_x B₆ (x = 0 (a), 0.2 (b), 0.4 (c), 0.6 (d), 0.8 (e)) nanoparticles.

DownLoad: Full-Size Img PowerPoint

图 6 La_0.875Sr_0.125B₆晶体的态密度的第一性原理计算结果

Figure 6. First-principle calculation results of density of states of La_0.875Sr_0.125B₆ crystal.

DownLoad: Full-Size Img PowerPoint

图 7 La_0.875Sr_0.125B₆晶体的(a)介电函数和(b)能量损失谱

Figure 7. (a) Dielectric function and (b) loss function spectra of La_0.875Sr_0.125B₆ crystal.

DownLoad: Full-Size Img PowerPoint

图 8 单晶SrB₆的(a) (100)面、(b) (110)面、(c) (111)面、(d) (210)面的结构示意图及逸出功计算结果; (e) SrB₆多晶块体的热电子发射电流密度随外加电压变化曲线; (f) SrB₆多晶块体的lgJ-U ^0.5曲线

Figure 8. Schematic diagram of (a) (100) surface, (b) (110) surface, (c) (111) surface, (d) (210) surface of single crystal SrB₆ and the calculated results of escape work; (e) thermionic emission current density of SrB₆ polycrystalline bulk with applied voltage; (f) lgJ-U ^0.5 curves of SrB₆ polycrystalline bulk.

DownLoad: Full-Size Img PowerPoint

图 9 La_1–x Sr_x B₆多晶块体的热电子发射电流密度　(a) x = 0.8; (b) x = 0.6; (c) x = 0.4; (d) x = 0.2

Figure 9. Thermionic emission current density of La_1–x Sr_x B₆ bulks: (a) x = 0.8; (b) x = 0.6; (c) x = 0.4; (d) x = 0.2.

DownLoad: Full-Size Img PowerPoint

图 10 La_1–x Sr_x B₆多晶块体肖特基外延曲线　(a) x = 0.8; (b) x = 0.6; (c) x = 0.4; (d) x = 0.2

Figure 10. Typical Schottky plots for La_1–x Sr_x B₆ bulks: (a) x = 0.8; (b) x = 0.6; (c) x = 0.4; (d) x = 0.2.

DownLoad: Full-Size Img PowerPoint

图 11 所提出的La_1–x Sr_x B₆增强热电子发射机理示意图

Figure 11. Proposed mechanism of the La_1–x Sr_x B₆ enhanced thermionic emission.

DownLoad: Full-Size Img PowerPoint

表 1 La_1–x Sr_x B₆ (x =1, 0.8, 0.6, 0.4, 0.2)多晶块体的零场发射电流密度J₀和有效逸出功φ_e

Table 1. Zero field emission current density J₀ and the effective escape work φ_e of the polycrystalline block La_1–x Sr_x B₆ (x = 1, 0.8, 0.6, 0.4, 0.2).

Compound 零场发射电流密度(J₀) 有效逸出功
φ_e/
eV
1673 K 1773 K

SrB₆ 0.97 1.79 2.845
La_0.2Sr_0.8B₆ 1.67 4.73 2.691
La_0.4Sr_0.6B₆ 3.5 8.7 2.585
La_0.6Sr_0.4B₆ 4.1 8.3 2.573
La_0.8Sr_0.2B₆ 5.39 10 2.552

DownLoad: CSV

[1]	Kirley M P, Novakovic B, Sule N, Weber M J, Knezevic I, Booske J H 2012 J. Appl. Phys. 111 063717 Google Scholar
[2]	Xu J Q, Hou G H, Li H Q, Zhai T Y, Dong B P, Yan H L, Wang Y R, Yu B H, Bando Y, Golberg D 2013 NPG Asia Mater. 5 547 Google Scholar
[3]	Kumari M, Gautam S, Shah P V, Pal S, Ojha U S, Kumar A, Naik A A, Rawat J S, Chaudhury P K, Harsh, Tandon R P 2012 Appl. Phys. Lett. 101 4995 Google Scholar
[4]	Yuan Y F, Zhang L, HuLJ, Wang W, Min G H 2011 J. Solid State Chem. 184 3364 Google Scholar
[5]	Tang H B, Su Y C, Tan J, Hu T, GongJY, Xiao L H 2014 Superattice Microst. 75 908 Google Scholar
[6]	Chao L M, Bao L H, Wei W, Tegus O, Zhang Z D 2016 J. Alloys. Compd. 672 419 Google Scholar
[7]	Mattox T M, Agrawal A, Milliron D J 2015 Chem. Mater. 27 6620 Google Scholar
[8]	Chen M C, Lin Z W, Ling M H 2016 Acs Nano 10 93 Google Scholar
[9]	Chen C J, Chen D H 2012 Chem. Eng. 180 337 Google Scholar
[10]	Tang S L, Huang W C, Gao Y, An N, Wu Y D, Yang B, Yan M, Cao J Y, Guo C S 2021 J. Mater. Chem. B 9 4380 Google Scholar
[11]	Takeda H, Kuno H, Adachi K 2008 J. Am. Ceram. Soc. 91 2897 Google Scholar
[12]	Schelm S, Smith G B 2003 Appl. Phys. Lett. 82 4346 Google Scholar
[13]	Adachi K, Miratsu M, Asahi T 2010 J. Mater. Res. 25 510 Google Scholar
[14]	Schelm S, Smith G B, Grrett P D, Fisher W K 2005 J. Appl. Phys. 97 124314 Google Scholar
[15]	Smith G B 2002 Mater. Forum. 26 20
[16]	Bao L H, Qi X P, Ta N, Chao L M, Tegus O 2016 Phys. Chem. Chem. Phys. 18 19165 Google Scholar
[17]	Bao L H, Chao L M, Wei W, Tegus O 2015 Mater. Lett. 139 187 Google Scholar
[18]	Bao L H, Qi X P, Bao T N, Tegus O 2018 J. Alloy. Compd. 731 332 Google Scholar
[19]	Zhou S L, Zhang J X, Bao L H, Yu X G, Hu Q L, Hu D Q 2014 J. Alloys. Compd. 611 130 Google Scholar
[20]	Hasan M M, Cuskelly D, Sugo H, Kisi E H 2015 J. Alloy. Compd. 636 37 Google Scholar
[21]	Hohenberg P, Kohn W 1964 Phys. Rev. 136 B864
[22]	Vanderbilt D 1990 Phys. Rev. B 41 7892 Google Scholar
[23]	Perdew J P, Burke K, Ernzerhof M 1996 Phys. Rev. Lett. 77 3865 Google Scholar
[24]	Chao L M, Bao L H, Shi J J, Wei W, Tegus O, Zhang Z D 2015 J. Alloy. Compd. 622 618 Google Scholar
[25]	Liu H L, Zhang X, Ning S Y 2017 Vacuum 143 245 Google Scholar
[26]	Bao L H, Ming M, Tegus O 2015 J. Inorg. Mater. 30 1110 Google Scholar
[27]	Xiao L H, Su Y C, Zhou X Z, Chen H Y, Tan J, Hu T, Yan J, Peng P 2012 Appl. Phys. Lett. 101 041913 Google Scholar
[28]	Kimura S, Nanba T, Kunii S, Kasuya T 1990 Phys. Rev. B 59 3388 Google Scholar
[29]	Kauer E 1963 Phys. Lett. 7 171 Google Scholar
[30]	Kimura S, Nanba T, Kunii S, Suzuki T, Kasuya T 1990 Solid State Commun. 75 717 Google Scholar
[31]	Bao L H, Qi X P, Ta N, Chao L M, Tegus O 2016 Cryst. Eng. Comm. 18 1223 Google Scholar
[32]	Xin S W, Liu S C, Wang N, Han X Y, Wang L M, Xu B, Tian Y J, Liu Z Y, He J L, Yu D L 2011 J. Alloy. Compd. 509 7927 Google Scholar
[33]	Zheng S, Zou Z, Min G, Yu H S, Han J D, Wang W T 2002 J. Mater. Sci. Lett. 21 313 Google Scholar
[34]	Wang J, Zhu C, Meng F S, Liu G B, Gu Y, Wang H D, Gao S S, Wang K M 2018 Mod. Phys. Lett. B 32 1850007 Google Scholar
[35]	Futamoto M, Nakazawa M, Kawabe U 1980 Surf. Sci 100 470 Google Scholar
[36]	Swanson L W, Mcneely D R 1979 Surf. Sci 83 11 Google Scholar
[37]	周身林, 张久兴, 刘丹敏 2010 强激光与离子束 22 171 Google Scholar Zhou S L, Zhang J X, Liu D M 2010 High Power Laser and Particle Beams 22 171 Google Scholar

[1]	Li Han-Xi, Wang De-Zhen. Simulation of effect of thermionic emission on magnetized sheath near target plate of tungsten divertor. Acta Physica Sinica, 2023, 72(15): 159401. doi: 10.7498/aps.72.20230276
[2]	Pan Xiao-Jian, Bao Li-Hong, Ning Jun, Zhao Feng-Qi, Chao Luo-Meng, Liu Zi-Zhong. Synthesis and optical absorption properties of nanocrystalline rare earth hexaborides Nd_1–_xEu_xB₆ powders. Acta Physica Sinica, 2021, 70(3): 036101. doi: 10.7498/aps.70.20201288
[3]	Yu Peng, Wang Bao-Qing, Wu Xiao-Hu, Wang Wen-Hao, Xu Hong-Xing, Wang Zhi-Ming. Circular dichroism of honeycomb-shaped elliptical hole absorber. Acta Physica Sinica, 2020, 69(20): 207101. doi: 10.7498/aps.69.20200843
[4]	Zhao Cheng-Xiang, Qie Yuan, Yu Yao, Ma Rong-Rong, Qin Jun-Fei, Liu Yan. Enhanced optical absorption of graphene by plasmon. Acta Physica Sinica, 2020, 69(6): 067801. doi: 10.7498/aps.69.20191645
[5]	Cheng Da-Wei, Bao Li-Hong, Zhang Hong-Yan, Pan Xiao-Jian, Zhao Feng-Qi, O. Tegus, Chao Luo-Meng. Nanocrystalline CeB₆ and SmB₆ powder prepared by evaporative condensation method and their visible light transparency. Acta Physica Sinica, 2019, 68(24): 246101. doi: 10.7498/aps.68.20191312
[6]	Xu Feng^1\2, Yu Guo-Hao, Deng Xu-Guang, Li Jun-Shuai, Zhang Li, Song Liang, Fan Ya-Ming, Zhang Bao-Shun. Current transport mechanism of Schottky contact of Pt/Au/n-InGaN. Acta Physica Sinica, 2018, 67(21): 217802. doi: 10.7498/aps.67.20181191
[7]	Ren Chao, Li Xiu-Yan, Luo Quan-Wei, Liu Rui-Ping, Yang Zhi, Xu Li-Chun. Electronic structure and optical absorption properties of -AgVO3 with vacancy defects. Acta Physica Sinica, 2017, 66(15): 157101. doi: 10.7498/aps.66.157101
[8]	Zhai Shun-Cheng, Guo Ping, Zheng Ji-Ming, Zhao Pu-Ju, Suo Bing-Bing, Wan Yun. First principle study of electronic structures and optical absorption properties of O and S doped graphite phase carbon nitride (g-C3N4)6 quantum dots. Acta Physica Sinica, 2017, 66(18): 187102. doi: 10.7498/aps.66.187102
[9]	Bao Li-Hong, Chao Lu-Meng, Wei Wei, O. Tegus. Synthesis and optical absorption properties of LaxCe1-xB6 submicron powders. Acta Physica Sinica, 2015, 64(9): 096104. doi: 10.7498/aps.64.096104
[10]	Xue Bin, Wang Hong-Yang, Qin Meng, Cao Yi, Wang Wei. A photocatalysis system based on composite nanostructures of controlable peptide nanotubes and graphene. Acta Physica Sinica, 2015, 64(9): 098702. doi: 10.7498/aps.64.098702
[11]	Pu Nian-Nian, Li Hai-Rong, Xie Long-Zhen. Influence of NiOx hole-transporting layer on the light absorption of the polymer solar cells. Acta Physica Sinica, 2014, 63(6): 067201. doi: 10.7498/aps.63.067201
[12]	Bao Li-Hong, Narengerile, O. Tegus, Zhang Xin, Zhang Jiu-Xing. Synthesis and properties of LaxCe1-xB6 compounds by in-situ spark plasma sintering. Acta Physica Sinica, 2013, 62(19): 196105. doi: 10.7498/aps.62.196105
[13]	Peng Kai, Liu Da-Gang. Numerical simulation and study of three-dimensional thermal field emission. Acta Physica Sinica, 2012, 61(12): 121301. doi: 10.7498/aps.61.121301
[14]	Guo Zhao, Lu Bin, Jiang Xue, Zhao Ji-Jun. Structural, electronic, and optical properties of Li-n-1, Lin and Li+ n+1(n=20, 40) clusters by first-principles calculations. Acta Physica Sinica, 2011, 60(1): 013601. doi: 10.7498/aps.60.013601
[15]	Xiong Da-Yuan, Li Zhi-Feng, Chen Xiao-Shuang, Li Ning, Zhen Hong-Lou, Lu Wei. Metal sphere array for long wavelength quantum well infrared photodetectors optical coupling. Acta Physica Sinica, 2007, 56(11): 6648-6653. doi: 10.7498/aps.56.6648
[16]	Yang Guang, Chen Zheng-Hao. Optical properties of laser ablated Ag:BaTiO3 composite films. Acta Physica Sinica, 2006, 55(8): 4342-4346. doi: 10.7498/aps.55.4342
[17]	Cui Yong-Feng, Yuan Zhi-Hao. Structural phase transformation and optical absorption of capped TiO2 nanoparticles. Acta Physica Sinica, 2006, 55(10): 5172-5177. doi: 10.7498/aps.55.5172
[18]	Qin Hua, Fu Ru-Lian, Gao Hong-Yun, Liu Juan, Shi Xin-Gang. Theoretical study of the pump light absorption inside a three-level solid state laser medium. Acta Physica Sinica, 2005, 54(4): 1587-1592. doi: 10.7498/aps.54.1587
[19]	ZHANG QI-FENG, HOU SHI-MIN, ZHANG GENG-MIN, LIU WEI-MIN, XUE ZENG-QUAN, WU JIN-LEI. OPTICAL ABSORPTION OF Ag-BaO THIN FILM IN THE VISIBLE AND NEAR-INFRARED REGION WITH APPLIED ELECTRIC FIELD. Acta Physica Sinica, 2001, 50(3): 561-565. doi: 10.7498/aps.50.561
[20]	WANG YIN-HAI, MO JI-MEI, CAI WEI-LI, XU YAN-QI. NANO-Cu/Al2O3 ASSEMBLIES TEMPLATE SYNTHESIS AND OPTICAL ABSORPTION. Acta Physica Sinica, 2001, 50(9): 1751-1755. doi: 10.7498/aps.50.1751

214204-20211069---补充材料.pdf

Catalog

Vol. 70, Issue 21 - 2021-11-05

Metrics

Abstract views: 4574
PDF Downloads: 75
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

Optical absorption and thermionic emission mechanism of multi-functional La_1–x Sr_x B₆ hexaborides

Abstract

Authors and contacts

Corresponding author: Bao Li-Hong, baolihong@imnu.edu.cn

FullText HTML : translate this paragraph

Supplements

References

Cited By

Catalog

Metrics

Authors

Referees

About Journal

About

Compound	零场发射电流密度(J₀)		有效逸出功 φ_e/ eV
Compound	1673 K	1773 K	有效逸出功 φ_e/ eV
SrB₆	0.97	1.79	2.845
La_0.2Sr_0.8B₆	1.67	4.73	2.691
La_0.4Sr_0.6B₆	3.5	8.7	2.585
La_0.6Sr_0.4B₆	4.1	8.3	2.573
La_0.8Sr_0.2B₆	5.39	10	2.552

Search

Article

留言板