Existence of the Co3+ Low Spin State in TbBaCo2O5.5

Minoru Soda; Yukio Yasui; Yoshiaki Kobayashi; Toshiaki Fujita; Masatoshi Sato; Kazuhisa Kakurai

doi:10.1143/JPSJ.75.104708

Existence of the Co3+ Low Spin State in TbBaCo2O5.5

Strongly Correlated Electrons 2009-11-11 v1 Materials Science

Authors: Minoru Soda , Yukio Yasui , Yoshiaki Kobayashi , Toshiaki Fujita , Masatoshi Sato , Kazuhisa Kakurai

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Abstract

NMR studies have been carried out on a single crystal sample of TbBaCo2O5.5 with the oxygen-deficient perovskite structure. We have also carried out neutron diffraction studies and added new results to our previously published data. By analyzing these data, the magnetic structures and the spin states of the system, which have been the subjects of strong controversies, are argued in the ferromagnetic and antiferromagnetic phases. We show that among various magnetic structures ever proposed, only our non-collinear ones can reproduce all experimental results accumulated up to now.

Keywords

TbBaCo2O5.5 Co3+ low spin state NMR neutron diffraction magnetic structure perovskite non-collinear magnetism

Cite

@article{arxiv.cond-mat/0608180,
  title  = {Existence of the Co3+ Low Spin State in TbBaCo2O5.5},
  author = {Minoru Soda and Yukio Yasui and Yoshiaki Kobayashi and Toshiaki Fujita and Masatoshi Sato and Kazuhisa Kakurai},
  journal= {arXiv preprint arXiv:cond-mat/0608180},
  year   = {2009}
}

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8 pages, 7 figures, triplicated author's names corrected

Existence of the Co3+ Low Spin State in TbBaCo2O5.5

Abstract

Keywords

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