Magnetic properties of the ferrimagnetic cobaltite CaBaCo4O7

Zhe Qu; Langsheng Ling; Lei Zhang; Li Pi; Yuheng Zhang

doi:10.1016/j.ssc.2011.04.013

Magnetic properties of the ferrimagnetic cobaltite CaBaCo4O7

Strongly Correlated Electrons 2015-03-19 v1

Authors: Zhe Qu , Langsheng Ling , Lei Zhang , Li Pi , Yuheng Zhang

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Abstract

The magnetic properties of the ferrimagnetic cobaltite CaBaCo $_4$ O $_7$ are systematically investigated. We find that the susceptibility exhibits a downward deviation below $\sim$ 360 K, suggesting the occurrence of short range magnetic correlations at temperature well above $T_C$ . The effective moment is determined to be 4.5 $\mu_B$ /f.u, which is consistent with that expected for the Co $^{2+}$ /Co $^{3+}$ high spin species. Using a criterion given by Banerjee [Phys. Lett. \textbf{12}, 16 (1964)], we demonstrate that the paramagnetic to ferrimagnetic transition in CaBaCo $_4$ O $_7$ has a first order character.

Keywords

ferrimagnetic cobaltite magnetic susceptibility short range magnetic correlations first order transition high spin species

Cite

@article{arxiv.1104.4032,
  title  = {Magnetic properties of the ferrimagnetic cobaltite CaBaCo4O7},
  author = {Zhe Qu and Langsheng Ling and Lei Zhang and Li Pi and Yuheng Zhang},
  journal= {arXiv preprint arXiv:1104.4032},
  year   = {2015}
}

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9 pages, 4 figures. To be published in Solid State Communications

Magnetic properties of the ferrimagnetic cobaltite CaBaCo4O7

Abstract

Keywords

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