Low temperature, high magnetic field investigations of the nature of magnetism in the molecular semiconductor β- cobalt phthalocyanine (C32H16CoN8)
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- 作者：Zhengjun Wang (王正君)a ; M. Leeb ; E.S. Choib ; J. Postonc ; M.S. Seehraa ; mseehra@wvu.edu" class="auth_mail" title="E-mail the corresponding author
- 关键词：Linear chain antiferromagnet ; Exchange coupling ; Magnetic susceptibility ; Saturation magnetization ; Magnetic molecular semiconductors
- 刊名：Journal of Magnetism and Magnetic Materials
- 出版年：2016
- 出版时间：1 June 2016
- 年：2016
- 卷：407
- 期：Complete
- 页码：83-86
- 全文大小：1041 K
文摘
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Magnetization (M) vs. temperature from 0.4 K to 300 K in β-CoPc is measured.
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Peak at Tmax=1.9 K in the M vs. T data is observed.
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The data fits the Bonner–Fisher model for linear chain Heisenberg antiferromagnet.
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The fit yields the exchange constant J/kB=−1.5 K between Co2+ ions with spin 1/2.
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At 1 K, M vs. H saturates at 60 kOe signifying ferromagnetic alignment of spins.
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