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We have investigated the Fe/Cr doping effects on the magnetic property of a charge-ordered antiferromagnetic manganite La0.4Ca0.6MnO3. Magnetic measurements reveal interesting doping effects. While all the Fe-doped samples still have antiferromagnetic ground state, strong ferromagnetic tendency can be seen in the Cr-doped samples. Meanwhile, Cr-doped samples show clear metallic transport behavior, indicating an inherent double exchange mechanism responsible for the ferromagnetic metallic state. We thus propose that the magnetic exchange interaction between Mn and dopants, and the d-orbital electronic structure of Cr/Fe are essential for the distinct doping effect of Fe and Cr.
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Keywords:
- magnetic oxide /
- antiferromagnetic
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[19] Lu C L, Hu N, Yang M, Xia S C, Wang H W, Wang J F, Xia Z C, Liu J M 2014 Sci. Rep. 4 4902
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[22] Martinelli A, Ferretti M, Castellano C, Cimberle M R, Ritter C 2008 J. Phys.: Condens. Matter 20 145210
[23] Ramesha K, Thangadurai V, Sutar D, Subramanyam S V, Subbanna G N, Gopalakrishnan J 2000 Mater. Res. Bull. 35 559
[24] Kou Z Q, Di N L, Ma X, Li Q A, Cheng Z H 2005 Chin. Phys. 14 1653
[25] Hu N, Liu Y, Cheng L, Shi J, Xiong R 2011 Acta Phys. Sin. 60 017503 (in Chinese) [胡妮, 刘雍, 程莉, 石兢, 熊锐 2011 物理学报 60 017503]
[26] Wenger L E, Tsoi G M, Suryanarayanan R, Sudyoadsuk T 2008 J. Appl. Phys. 103 07F723
[27] Sudyoadsuk T, Suryanarayanan R, Winotai P 2004 J. Magn. Magn. Mater. 272 E1379
[28] Kirkpatrick S 1973 Rev. Mod. Phys. 45 574
[29] Kang J S, Kim J H, Sekiyama A, Kasai A, Suga S, Han S W, Kim K H, Choi E J, Kimura T, Muro T, Saitoh Y, Olson C G, Shim J H, Min B I 2003 Phys. Rev. B 68 012410
[30] Martin C, Maignan A, Hervieu M, Autret C, Raveau B, Khomskii D I 2001 Phys. Rev. B 63 174402
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[1] Dagotto E, Hotta T, Moreo A 2001 Phys. Rep. 344 1
[2] Shen J, Ward T Z, Yin L F 2013 Chin. Phys. B 22 017501
[3] Liu Y K, Yin Y W, Li X G 2013 Chin Phys. B 22 087502
[4] Zhang F H, Huang Z, Gao G Y, Chen P F, Wang L F, Tan X L, Wu W B 2010 Appl. Phys. Lett. 96 062507
[5] Takubo N, Miyano K 2007 Phys. Rev. B 76 184445
[6] Rini M, Tobey R, Dean N, Itatani J, Tomioka Y, Tokura Y, Schoenlein R W, Cavalleri A 2007 Nature 449 72
[7] Pradhan K, Mukherjee A, Majumdar P 2007 Phys. Rev. Lett. 99 147206
[8] Banerjee A, Mukherjee K, Kumar K, Chaddah P 2006 Phys. Rev. B 74 224445
[9] Moritomo Y, Murakami K, Ishikawa H, Hanawa M, Nakamura A, Ohoyama K 2004 Phys. Rev. B 69 212407
[10] Kim J S, Kim D C, McIntosh G C, Chu S W, Park Y W, Kim B J, Kim Y C, Maignan A, Raveau B 2002 Phys. Rev. B 66 224427
[11] Markovich V, Fita I, Puzniak R, Rozenberg E, Wisniewski A, Martin C, Maignan A, Hervvieu M, Raveau B, Gorodetsky G 2002 Phys. Rev. B 65 224415
[12] Markovich V, Rozenberg E, Gorodetsky G, Martin C, Maignan A, Hervieu M, Raveau B 2001 Phys. Rev. B 64 224410
[13] Martin C, Maignan A, Hervieu M, Autret C, Raveau B, Khomskii D I 2001 Phys. Rev. B 63 174402
[14] Hébert S, Maignan A, Martin C, Raveau B 2002 Solid State Commun. 121 229
[15] Guo H Y, Liu N, Cai Z R, Zhang Y H 2006 Acta Phys. Sin. 55 865 (in Chinese) [郭焕银, 刘宁, 蔡之让, 张裕恒 2006 物理学报 55 865]
[16] Lu C L, Chen X, Dong S, Wang K F, Cai H L, Liu J M 2009 Phys. Rev. B 79 245105
[17] Wang K F, Wang Y, Wang L F, Dong S, Li D, Zhang Z D, Yu H, Li Q C, Liu J M 2006 Phys. Rev. B 73 134411
[18] Hu N, Lu C L, Wang K F, Cheng L, Liu Y, Liu J M, Xiong R, Shi J 2011 Appl. Phys. A 103 485
[19] Lu C L, Hu N, Yang M, Xia S C, Wang H W, Wang J F, Xia Z C, Liu J M 2014 Sci. Rep. 4 4902
[20] Shannon R D 1976 Acta Crystallogr. Ser. A: Cryst. Phys. Diffr. Theor. Gen. Crystallogr. A 32 751
[21] Studer F, Toulemonde O, Goedkoop J B, Barnabe A, Raveau B 1999 Jpn. J. Appl. Phys. Part I 38 377
[22] Martinelli A, Ferretti M, Castellano C, Cimberle M R, Ritter C 2008 J. Phys.: Condens. Matter 20 145210
[23] Ramesha K, Thangadurai V, Sutar D, Subramanyam S V, Subbanna G N, Gopalakrishnan J 2000 Mater. Res. Bull. 35 559
[24] Kou Z Q, Di N L, Ma X, Li Q A, Cheng Z H 2005 Chin. Phys. 14 1653
[25] Hu N, Liu Y, Cheng L, Shi J, Xiong R 2011 Acta Phys. Sin. 60 017503 (in Chinese) [胡妮, 刘雍, 程莉, 石兢, 熊锐 2011 物理学报 60 017503]
[26] Wenger L E, Tsoi G M, Suryanarayanan R, Sudyoadsuk T 2008 J. Appl. Phys. 103 07F723
[27] Sudyoadsuk T, Suryanarayanan R, Winotai P 2004 J. Magn. Magn. Mater. 272 E1379
[28] Kirkpatrick S 1973 Rev. Mod. Phys. 45 574
[29] Kang J S, Kim J H, Sekiyama A, Kasai A, Suga S, Han S W, Kim K H, Choi E J, Kimura T, Muro T, Saitoh Y, Olson C G, Shim J H, Min B I 2003 Phys. Rev. B 68 012410
[30] Martin C, Maignan A, Hervieu M, Autret C, Raveau B, Khomskii D I 2001 Phys. Rev. B 63 174402
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