Electron Magnetic Resonance Studies of the Intercalation Ferromagnet 2,2′-bipyridine-MnPS3Above and Below Curie Temperature
作者:
M.K. Bhide,
M.D. Sastry,
Jingui Qin,
Chuluo Yang,
K. Yakushi,
Yasuhiro Nakazawa,
Kenji Ichimura,
A.K. Sra,
J.V. Yakhmi,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 2000)
卷期:
Volume 348,
issue 1
页码: 295-300
ISSN:1058-725X
年代: 2000
DOI:10.1080/10587250008024812
出版商: Taylor & Francis Group
关键词: Electron magnetic resonance;intercalation ferromagnet
数据来源: Taylor
摘要:
Electron magnetic resonance (EMR) studies of intercalation ferromagnet 2,2′-bipyridine-MnPS3(Tc= 40 K) in the temperature range 300 – 14 K have revealed many interesting features across the (magnetic) order ← → disorder transition. The exchange narrowed line in the paramagnetic phase exhibited sudden reduction in its intensity concomitant with a g-shift to lower values (line shifted to higher fields) and increased line width. These changes took place in the 40–25 K range. In the 25–22K range of temperature, the paramagnetic line disappeared and the FMR signal appeared at lower fields. It is significant that two closely lying FMR signals appeared in the magnetically ordered regime, suggesting the possibility of existence of two different Mn-sites having different g-values, in this state. This may be responsible for the reported magnetic moments values of less than 5.98 BM from bulk magnetisation studies.
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