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The structural, the magnetic, the transport and the half-metallic properties of quaternary Heusler alloy Fe2Co1-xCrxSi are investigated. The studies of X-ray diffraction and temperature dependence of magnetization reveal that Fe2Co1-xCrxSi alloy always maintains a high degree of order, while the Curie temperature decreases gradually with the increase of Cr concentration x. Importantly, the lattice constant and the saturation magnetic moment of Fe2Co1-xCrxSi alloy follow the Vegard law and half-metallic Slater-Pauling rule, respectively. Based on the band structure calculation, Fe2Co1-xCrxSi alloy keeps a 100% spin polarization and Fermi level moves from the top of valence band to the bottom of conduction band, depending on Cr concentration x. Our results indicate that quaternary Fe2Co1-xCrxSi Heusler alloy is a promising robust half-metallic candidate for spintronics applications.
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Keywords:
- magnetic properties /
- half-metal /
- Heusler alloys
[1] de Groot R A, Mueller F M, Engen P G, Buschow K H J 1983 Phys. Rev. Lett. 50 2024
[2] Katsnelson M I, Irkhin V Y, Chioncel L, Lichtenstein A I, de Groot R A 2008 Rev. Mod. Phys. 80 315
[3] Yao Z Y, Fu J, Gong S H, Zhang Y S, Yao K L 2011 Acta Phys. Sin. 60 127103 (in Chinese) [姚仲瑜, 傅军, 龚少华, 张月胜, 姚凯伦 2011 物理学报 60 127103]
[4] Liu J, Zhag R, Li L, Dong H N 2011 Chin. Phys. B 20 077101
[5] Park J H, Vescovo E, Kim H J, Kwon C, Ramesh R, Venkatesan T 1998 Nature 392 794
[6] Ji Y, Strijkers G J, Yang F Y, Chien C L, Byers J M, Anguelouch A 2001 Phys. Rev. Lett. 86 5585
[7] Fujii S, Sugimura S, Ishida S, Asano S 1990 J. Phys. Condes. Matter 2 8583
[8] Picozzi S, Continenza A, Freeman A J 2002 Phys. Rev. B 66 094421
[9] Wang W H, Przybylski M, Kuch W, Chelaru L I, Wang J, Lu Y F 2005 Phys. Rev. B 71 144416
[10] Wang W H, Sukegawa H, Shan R, Mitani S, Inomata K 2009 Appl. Phys. Lett. 95 182502
[11] Ritchie L, Xiao G, Ji Y, Chen T Y, Chien C L, Zhang M 2003 Phys. Rev. B 68 104430
[12] Li G N, Jin Y J, Lee J I 2010 Chin. Phys. B 19 097102
[13] Ravel B, Raphael M P, Harris V G, Huang Q 2002 Phys. Rev. B 65 184431
[14] Luo H Z, Zhu Z Y, Li M, Xu S F, Liu H Y, Qu J P 2007 J. Phys. D Appl. Phys. 40 7121
[15] Zhao J J, Qi X, Liu E K, Zhu W, Qian J F, Li G J, Wang W H, Wu G H 2011 Acta Phys. Sin. 60 047108 (in Chinese) [赵晶晶, 祁欣, 刘恩克, 朱伟, 钱金凤, 李桂江, 王文洪, 吴光恒 2011 物理学报 60 047108]
[16] Webster P J 1969 Contemp. Phys. 10 559
[17] Nakatani T M, Rajanikanth A, Gercsi Z, Takahashi Y K, Inomata K, Hono K 2007 J. Appl. Phys. 102 033916
[18] Galanakis I, Dederichs P H, Papanikolaou N 2002 Phys. Rev. B 66 134428
[19] Branford W R, Clowes S K, Bugoslavsky Y V, Gardelis S, Androulakis J, Giapintzakis J 2004 Phys. Rev. B 69 201305
[20] Kumar D, Sankar J, Narayan J, Singh K, Majumdar A K 2002 Phys. Rev. B 65 094407
[21] Blum C G F, Jenkins C A, Barth J, Felser C, Wurmehl S, Friemel G 2009 Appl. Phys. Lett. 95 161903
[22] Galanakis I, Dederichs P H, Papanikolaou N 2002 Phys. Rev. B 66 174429
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[1] de Groot R A, Mueller F M, Engen P G, Buschow K H J 1983 Phys. Rev. Lett. 50 2024
[2] Katsnelson M I, Irkhin V Y, Chioncel L, Lichtenstein A I, de Groot R A 2008 Rev. Mod. Phys. 80 315
[3] Yao Z Y, Fu J, Gong S H, Zhang Y S, Yao K L 2011 Acta Phys. Sin. 60 127103 (in Chinese) [姚仲瑜, 傅军, 龚少华, 张月胜, 姚凯伦 2011 物理学报 60 127103]
[4] Liu J, Zhag R, Li L, Dong H N 2011 Chin. Phys. B 20 077101
[5] Park J H, Vescovo E, Kim H J, Kwon C, Ramesh R, Venkatesan T 1998 Nature 392 794
[6] Ji Y, Strijkers G J, Yang F Y, Chien C L, Byers J M, Anguelouch A 2001 Phys. Rev. Lett. 86 5585
[7] Fujii S, Sugimura S, Ishida S, Asano S 1990 J. Phys. Condes. Matter 2 8583
[8] Picozzi S, Continenza A, Freeman A J 2002 Phys. Rev. B 66 094421
[9] Wang W H, Przybylski M, Kuch W, Chelaru L I, Wang J, Lu Y F 2005 Phys. Rev. B 71 144416
[10] Wang W H, Sukegawa H, Shan R, Mitani S, Inomata K 2009 Appl. Phys. Lett. 95 182502
[11] Ritchie L, Xiao G, Ji Y, Chen T Y, Chien C L, Zhang M 2003 Phys. Rev. B 68 104430
[12] Li G N, Jin Y J, Lee J I 2010 Chin. Phys. B 19 097102
[13] Ravel B, Raphael M P, Harris V G, Huang Q 2002 Phys. Rev. B 65 184431
[14] Luo H Z, Zhu Z Y, Li M, Xu S F, Liu H Y, Qu J P 2007 J. Phys. D Appl. Phys. 40 7121
[15] Zhao J J, Qi X, Liu E K, Zhu W, Qian J F, Li G J, Wang W H, Wu G H 2011 Acta Phys. Sin. 60 047108 (in Chinese) [赵晶晶, 祁欣, 刘恩克, 朱伟, 钱金凤, 李桂江, 王文洪, 吴光恒 2011 物理学报 60 047108]
[16] Webster P J 1969 Contemp. Phys. 10 559
[17] Nakatani T M, Rajanikanth A, Gercsi Z, Takahashi Y K, Inomata K, Hono K 2007 J. Appl. Phys. 102 033916
[18] Galanakis I, Dederichs P H, Papanikolaou N 2002 Phys. Rev. B 66 134428
[19] Branford W R, Clowes S K, Bugoslavsky Y V, Gardelis S, Androulakis J, Giapintzakis J 2004 Phys. Rev. B 69 201305
[20] Kumar D, Sankar J, Narayan J, Singh K, Majumdar A K 2002 Phys. Rev. B 65 094407
[21] Blum C G F, Jenkins C A, Barth J, Felser C, Wurmehl S, Friemel G 2009 Appl. Phys. Lett. 95 161903
[22] Galanakis I, Dederichs P H, Papanikolaou N 2002 Phys. Rev. B 66 174429
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