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Theoretical studies of the site preference, electronic and lattice vibration properties of La3Co29-xFexSi4B10

Wang Xiao-Xu Zhao Liu-Tao Cheng Hai-Xia Qian Ping

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Theoretical studies of the site preference, electronic and lattice vibration properties of La3Co29-xFexSi4B10

Wang Xiao-Xu, Zhao Liu-Tao, Cheng Hai-Xia, Qian Ping
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  • In this work, the initial configuration is first optimized by the first principle and interatomic pair potentials separately, the lattice parameters of the stable structure are in good agreement with the experimental values. The site preferences of La3Co29-xFexSi4B10 compounds are studied by using the first principle with density function theory method. The calculated results show that the substitution of Fe for Co has a strong preference for the 2c site, and the substitution sequence is 2c 8j1 8i2 8j2 8i3 16k 8i1, which is in good agreement with the experimental result The lattice parameters of La3Co29-xFexSi4B10 system change little, but the magnetic moment changes obviously, when only one Co atom is substituted by Fe atoms each time. We calculate the electronic densities of states and magnetic moments of La3Co29-xFexSi4B10 compound when all the Co atoms from different sites are substituted by Fe atoms with the preferential order With the increases of Fe content values in the La3Co29-xFexSi4B10, the curves of density of states move leftwards gradually. And the magnetic moment of the La3Fe29Si4B10 is larger than that of La3Co29Si4B10. Furthermore, the lattice vibrational and thermodynamic properties are predicted by using a series of interatomic pair potentials. The Co, Fe and La atoms contribute to the lower frequency vibrations because of their heavier mass. With the increase of Fe content the cut-off frequencies of La3Co29-xFexSi4B10 first decrease and then increase, and the vibration mode induced by Si element decreases in medium frequency. The very strong B-B interaction causes higher frequency vibrations. Furthermore, the specific heat, vibrational entropy and Debye temperature are predicted based on the phonon densities of states of the La3Co29-xFexSi4B10 with the different content values of Fe. The Debye temperature rises when the Fe content is bigger than Co content in La3Co29-xFexSi4B10compound.
      Corresponding author: Wang Xiao-Xu, wangxx@bcc.ac.cn
    • Funds: Project supported by the National Basic Research Program of China (Grant No. 2011CB606401).
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    [2]

    Ren W D, Zhang Z D 2013 Chin. Phys. B 22 077507

    [3]

    Hirosawa S, Matsuura Y, Yamamoto H, Fujimura S, Sagawa M and Yamauchi H 1986 J. Appl. Phys. 59 873

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    He Y Z 2013 Chin. Phys. B 22 074101

    [5]

    Yan G L, Fang Z H 2015 Chin. Phys. B 24 107503

    [6]

    Zhang H, Shen B G. 2015 Chin. Phys. B 24 127504

    [7]

    Jiang T, He F S Jiao F, He F, Lu X Y, Zhao K, Zhao H Y You Y S, Chen L 2014 Chin. Phys. B 23 057403

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    Niihara K, Yajima S 1972 Chem Lett. 10 875

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    Rosenberg M, Mittag M, Buschow K H J 1988 J. Appl. Phys. 63 3586

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    Wu E, Wantenaar G H J, Campbell S J, Li H S 1993 J. Phys. Condens Matter 5 L457

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    Zhang H, Wu E, Campbell S J, Kennedy S J, Li H S, Studer A J, Bulcock S R, Rae A D 1998 J. Alloy Compd. 278 239

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    Zhang H, Campbell S J, Edge A V J 2000 J. Phys. Condens Matter. 12 L159

    [14]

    Zhang H, Campbell S J, Li H S, Hofmann M, Edge A V J 2000 J. Phys. Condens Matter. 12 5021

    [15]

    Wang X X, Qian P, Zhang Z F, Liu Y, Shen J, Chen N X 2013 Intermetallics 42 112

    [16]

    Cheng H X, Wang X X, Hu Y W, Zhang G H, Shen J, Qian P, Chen N X 2015 J. Solid State Chem. 224 7

    [17]

    Kresse G, Furthmller J 1996 Comput. Mater. Sci. 6 15

    [18]

    Kresse G, Furthmller J 1996 Phys. Rev. B 55 11169

    [19]

    Blöchl P E 1994 Phys. Rev. B 50 17953

    [20]

    Perdew J P, Ziesche P, Eschrig H 1991 Akademie Verlag, Berlin

    [21]

    Perdew J P, BurkeK, Ernzerhof M 1996 Phys. Rev. Lett. 77 3865

    [22]

    Chen N X, Ren G B 1992 Phys. Rev. B 45 8177

    [23]

    Chen N X Ge X J, Zhang W Q, Zhu F W 1998 Phys. Rev. B 57 14203

    [24]

    Qian P, Hu Q Y, Shen J, Feng Y, Pan H Y, Hu P 2010 Model. Simul. Mater. Sci. Eng. 18 045002

    [25]

    Huang K, Han R Q 1988 Solid State Physics (Beijing: Higher Education Press) p29 (in Chinese) [黄昆, 韩汝琦 1988 固体物理学 (北京: 高等教育出版社) 第29页]

    [26]

    Chen Y L 2000 Mössbauer Effect in Lattice Dynamics (Wuhan: Wuhan University Press) pp113-173 (in Chinese) [陈义龙 2000 穆斯堡尔效应与晶体动力学 (武汉: 武汉大学出版社)第113-173页]

  • [1]

    Pan Y J 1993 A handbook for extractive metallurgy of nonferrous metals: rare earth metals (Beijing: Metallurgical Industry Press) pp4-47 (in Chinese) [潘叶金 1993 有色金属提取冶金手册: 稀土金属 (北京: 冶金工业出版社) 第4-47页]

    [2]

    Ren W D, Zhang Z D 2013 Chin. Phys. B 22 077507

    [3]

    Hirosawa S, Matsuura Y, Yamamoto H, Fujimura S, Sagawa M and Yamauchi H 1986 J. Appl. Phys. 59 873

    [4]

    He Y Z 2013 Chin. Phys. B 22 074101

    [5]

    Yan G L, Fang Z H 2015 Chin. Phys. B 24 107503

    [6]

    Zhang H, Shen B G. 2015 Chin. Phys. B 24 127504

    [7]

    Jiang T, He F S Jiao F, He F, Lu X Y, Zhao K, Zhao H Y You Y S, Chen L 2014 Chin. Phys. B 23 057403

    [8]

    Niihara K, Yajima S 1972 Chem Lett. 10 875

    [9]

    Malik S K, Zhang L Y, Wallace W E, Sankar S G 1989 J. Magn. Mater. 78 L6

    [10]

    Rosenberg M, Mittag M, Buschow K H J 1988 J. Appl. Phys. 63 3586

    [11]

    Wu E, Wantenaar G H J, Campbell S J, Li H S 1993 J. Phys. Condens Matter 5 L457

    [12]

    Zhang H, Wu E, Campbell S J, Kennedy S J, Li H S, Studer A J, Bulcock S R, Rae A D 1998 J. Alloy Compd. 278 239

    [13]

    Zhang H, Campbell S J, Edge A V J 2000 J. Phys. Condens Matter. 12 L159

    [14]

    Zhang H, Campbell S J, Li H S, Hofmann M, Edge A V J 2000 J. Phys. Condens Matter. 12 5021

    [15]

    Wang X X, Qian P, Zhang Z F, Liu Y, Shen J, Chen N X 2013 Intermetallics 42 112

    [16]

    Cheng H X, Wang X X, Hu Y W, Zhang G H, Shen J, Qian P, Chen N X 2015 J. Solid State Chem. 224 7

    [17]

    Kresse G, Furthmller J 1996 Comput. Mater. Sci. 6 15

    [18]

    Kresse G, Furthmller J 1996 Phys. Rev. B 55 11169

    [19]

    Blöchl P E 1994 Phys. Rev. B 50 17953

    [20]

    Perdew J P, Ziesche P, Eschrig H 1991 Akademie Verlag, Berlin

    [21]

    Perdew J P, BurkeK, Ernzerhof M 1996 Phys. Rev. Lett. 77 3865

    [22]

    Chen N X, Ren G B 1992 Phys. Rev. B 45 8177

    [23]

    Chen N X Ge X J, Zhang W Q, Zhu F W 1998 Phys. Rev. B 57 14203

    [24]

    Qian P, Hu Q Y, Shen J, Feng Y, Pan H Y, Hu P 2010 Model. Simul. Mater. Sci. Eng. 18 045002

    [25]

    Huang K, Han R Q 1988 Solid State Physics (Beijing: Higher Education Press) p29 (in Chinese) [黄昆, 韩汝琦 1988 固体物理学 (北京: 高等教育出版社) 第29页]

    [26]

    Chen Y L 2000 Mössbauer Effect in Lattice Dynamics (Wuhan: Wuhan University Press) pp113-173 (in Chinese) [陈义龙 2000 穆斯堡尔效应与晶体动力学 (武汉: 武汉大学出版社)第113-173页]

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Publishing process
  • Received Date:  24 September 2015
  • Accepted Date:  07 December 2015
  • Published Online:  05 March 2016

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