Study of the Weak Ferromagnetism in Ca1-xLaxB6 Ceramics


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Ferromagnetism in La-doped single crystal CaB6 is interesting because it has no partially filled d- or f- orbits in CaB6. In this paper, we have investigated the relationship between the ferromagnetic properties with the La content in CaB6 polycrystalline ceramics prepared by redox method. Contrary to the single crystal results, we found that there is no direct correlation with the level of La substitution in ceramics samples Ca1-xLaxB6 (0 £ x £ 0.03). Instead we have shown that it is related to Fe impurities. Our results show it is important to consider the magnetic impurities in discussing the weak ferromagnetism in borides.



Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie






M. H. Cao et al., "Study of the Weak Ferromagnetism in Ca1-xLaxB6 Ceramics", Materials Science Forum, Vols. 475-479, pp. 1173-1176, 2005

Online since:

January 2005




[1] D. P. Young, D. Hall, M. E. Torelli, Z. Fisk, J. L. Sarrao, J. D. Thompson, H. R. Ott, S. B. Oseroff, R. G. Goodrich, R. Zysler: Nature (London) Vol. 397, (1999), p.412.

DOI: 10.1038/17081

[2] H. J. Tromp, P. van Gelderen, P. J. Kelly, G. Brocks, P. A. Bobbert: Phys. Rev. Lett. Vol. 87, (2001), p.016401.

[3] M. E. Zhitomirsky, T. M. Rice and V.I. Anisimov: Nature (London) Vol. 402, (1999), p.251.

[4] T. Moriwaka, T. Nishioka and N. K. Sato, J. Phys. Soc. Jpn. Vol. 70, (2001), p.341.

[5] R. R. Urbano, C. Rettori, G. E. Barberis, M. Torelli, A. Bianchi, Z. Fisk, P. G. Pagliuso, A. Malinowsk, M. F. Hundley, J. L. Sarrao, S. B. Oseroff: Physica B Vol. 320, (2002), p.419.

DOI: 10.1016/s0921-4526(02)00764-0

[6] S. Kunii : J. Phys. Soc. Jpn. Vol. 69, (2000), p.3789.

[7] K. Matsubayashi, M. Maki, T. Tsuzuki, T. Nishioka, N. K. Sato: Nature Vol. 420, (2002), p.143.

[8] C. Meegoda, M. Trenary, T. Mori, S. Otani, Phys Rev. B. Vol. 67, (2003), p.172410.

[9] T. Mori, S. Otani: Solid State Communications Vol. 123, (2002), p.287.

[10] S. E. Lofland, B. Seaman, K. V. Ramanujachary, N. Hur, S. W. Cheong, Phys Rev. B. Vol. 67, (2003), p.020410.

[11] T. Nakayama, H. Matsuda, K. Kimura, H. Ino J. Solid State Chem. Vol. 133, (1997), p.342.

[12] M. H. Cao, J. Jiang, J. Yuan, Phys Rev. B. (unpublished work).

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