Magnetic Properties of the Spin-1/2 Deformed Kagome Antiferromagnet Edwardsite

Hajime Ishikawa; Yoshihiko Okamoto; Zenji Hiroi

doi:10.7566/JPSJ.82.063710

Magnetic Properties of the Spin-1/2 Deformed Kagome Antiferromagnet Edwardsite

Materials Science 2015-06-15 v1 Strongly Correlated Electrons

Authors: Hajime Ishikawa , Yoshihiko Okamoto , Zenji Hiroi

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Abstract

We prepared a powder sample of edwardsite Cd2Cu3(SO4)2(OH)6 4H2O, which is a new candidate compound for the spin-1/2 kagome antiferromagnet, and studied its magnetic properties by magnetic susceptibility and heat capacity measurements. Edwardsite has a deformed kagome lattice with an average antiferromagnetic interaction of 51 K between nearby spins and shows an antiferromagnetic order accompanied by a small ferromagnetic moment below 4.3 K. The weak ferromagnetism is likely due to spin canting caused by sizable Dzyaloshinsky-Moriya interactions, which may stabilize the long-range magnetic order instead of a spin-liquid state expected for the kagome antiferromagnet.

Keywords

edwardsite spin-1/2 kagome antiferromagnet deformed kagome lattice magnetic susceptibility heat capacity dzyaloshinsky-moriya interaction spin canting weak ferromagnetism

Cite

@article{arxiv.1305.2477,
  title  = {Magnetic Properties of the Spin-1/2 Deformed Kagome Antiferromagnet Edwardsite},
  author = {Hajime Ishikawa and Yoshihiko Okamoto and Zenji Hiroi},
  journal= {arXiv preprint arXiv:1305.2477},
  year   = {2015}
}

Comments

5 pages, 6 figures, accepted for publication in J. Phys. Soc. Jpn

Magnetic Properties of the Spin-1/2 Deformed Kagome Antiferromagnet Edwardsite

Abstract

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