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High quality and large-size single crystals of CaTi2O4 were prepared by the molten salt flux method. The X-ray diffraction and the EDS results showed that all the CaTi2O4 crystals have the rom temperature lattice parameters a=9.781 ?,b=9.966 ? and c=3.148 ?, and all the samples have perfect stoichiometric composition. Through the magnetic susceptibility measurement, we first obtained the Van-Vleck paramagnetic parameter of CaTi2O4 of 6.85×10－5cm3/mol, and Cure-Weiss temperature of -0.44 K, revealing that CaTi2O4 is a weak ferromagnetic compound. Further more, the existence of Ti-Ti dimer was confirmed by anisotropy measurement, the structure and direction of the antiferromagnetic dimer chains were also determined.
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Keywords:
- CaTi2O4 /
- magnetic susceptibility /
- anisotropy /
- antiferromagnetic dimer
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[19] Liu X B, Zhang S Y, Shen B G 2004 Chin. Phys. 13 0397
[20] Du F, Li X, Huang Z F, Li A, Wang C Z, Chen G 2009 Acta Phys. Sin. 58 541 ( in Chinese ) [杜 菲、李 旭、黄祖飞、李 昂、王春忠、陈 岗 2009 物理学报 58 541]
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[1] Johnston D C, Prakash H, Zachariasen W H, Viswanathan R 1973 Mater. Res. Bull. 8 777
[2] Kondo S, Johnston D C, Swenson C A, Borsa F, Mahajan A V, Miller L L, Gu T, Kojima A I, Luke G M, Uemura Y J, Chmaissem O, Jorgensen J D 1997 Phys. Rev. Lett. 78 3729
[3] Ueda Y, Fujiwara N, Yasuoka H 1997 J. Phys. Soc. Jpn. 66 778
[4] Tang Z, Li C Z, Yin D, Zhu B P, Wang L L, Wang J F, Xiong R, Wang Q Q, Shi J 2006 Acta Phys. Sin. 55 6532 ( in Chinese ) [汤 征、李长真、尹 镝、朱本鹏、汪丽莉、王俊峰、熊 鋭、王取泉、石 兢 2006 物理学报 55 6532]
[5] Okamoto Y, Niitaka S, Uchida M, Waki T, Takigawa M, Nakatsu Y, Sekiyama A, Suga S, Arita R, Takagi H 2008 Phys. Rev. Lett. 101 86404
[6] Radaelli P G, Horibe Y, Gutmann M J, Ishibashi H, Chen C H, Ibberson R M, Koyama Y, Hor Y, Kiryukhin V, Cheong S 2002 Nature 416 155
[7] Khomskii D I, Mizokawa T 2005 Phys. Rev. Lett. 94 156402
[8] Yang H X, Zhu B P, Zeng L J, Tian H F, Ma C, Shi J, Li J Q 2008 Journal of Physics: Condensed Matter 20 275230
[9] Schmidt M, Ratcliff W N, Radaelli P G, Refson K, Harrison N M, Cheong S W 2004 Phys. Rev. Lett. 92 56402
[10] Geselbracht M J, Erickson A s, Rogge M P, Greedan J E, Walton R I, Stoltzfus M W, Eng H W, Woodward P M 2006 J. Solid State Chem. 179 3489
[11] Rogge M P, Caldwell J H, Ingram D R, Green C E, Geselbracht M J, Siegrist T 1998 J. Solid State Chem. 141 338
[12] Zhou H D, Goodenough J B 2005 Phys. Rev. B 72 45118
[13] Alexander D T L, Schwandt C, Frayb D J 2006 Acta Mater. 54 5
[14] Margret J G, Liam D N, Lien T N, Jessica H P, Richard I W, E. Sarah C, Franck M, Dermot O 2004 Chem. Mater. 16 1153
[15] Zhu B P, Tang Z, Zhao L H, Wang L L, Li C Z, Yin D, Yu Z X, Tang W F, Xiong R, Shi J, Ruan X F 2006 Mater. Lett. 61 578
[16] Isobe M, Ueda A Y 2004 J. Alloy. Compd. 383 85
[17] Zhang T, Chen P, Li C 2009 Chin. Phys. B 18 1346
[18] Lee S H, Louca D, Ueda H, Park S, Sato T J, Isobe M, Ueda Y, Rosenkranz S, Zschack P, Iniguez J, Qiu Y, Osborn R 2004 Phys. Rev. Lett. 93 156407
[19] Liu X B, Zhang S Y, Shen B G 2004 Chin. Phys. 13 0397
[20] Du F, Li X, Huang Z F, Li A, Wang C Z, Chen G 2009 Acta Phys. Sin. 58 541 ( in Chinese ) [杜 菲、李 旭、黄祖飞、李 昂、王春忠、陈 岗 2009 物理学报 58 541]
[21] Wang L L, Xiong R, Wei W, Hu N, Lin Y, Zhu B P, Tang W F, Yu Z X, Tang Z, Shi J 2008 Acta Phys. Sin. 57 4334 ( in Chinese ) [汪丽莉、熊 锐、魏 伟、胡 妮、林 颖、朱本鹏、汤五丰、余祖兴、汤 征、石 兢 2008 物理学报 57 4334]
[22] Hohl H, Kloc C, Bucher E 1996 J. Solid State Chem. 125 216
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