Pressure Dependence of the Magnetization of MII(N(CN)2)2: Mechanism for the Long Range Magnetic Ordering
作者:
ChristopherJ. Nuttall,
Taishi Takenobu,
Yoshihiro Iwasa,
Mohamedally Kurmoo,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 2000)
卷期:
Volume 343,
issue 1
页码: 227-234
ISSN:1058-725X
年代: 2000
DOI:10.1080/10587250008023531
出版商: Taylor & Francis Group
关键词: Cobalt;Dicyanamide;Iron;Magnetism;Nickel;Pressure
数据来源: Taylor
摘要:
The ac-susceptibilities of the isostructural metal-orgnets magnets, MII(N(CN)2)2(M = Ni (1), Co (2) and Fe (3)) have been studied as a function of temperature and pressure. Large variation in behaviors has been observed: the transition temperature initially increases in all three compounds and at higher pressures that for (1) saturates, for (2) decreases and for (3) increases continuously. These behaviors are due to the competition between antiferromagnetic (t2g↔eg) and ferromagnetic (t2g↔ t2gand eg↔ eg) inteeractions to the most dominant exchange pathway, M—N≡C-N—M. A mechanism for the magnetic ordering is proposed.
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