期刊
PHYSICA B-CONDENSED MATTER
卷 403, 期 5-9, 页码 1404-1405出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physb.2007.10.363
关键词
multiferroic; magnetic ordering; magnetic frustration; heat capacity
We present high-resolution specific heat data from 2 to 3 0 K of the mixed Kagome compounds (Co1-xNix)(3)V2O8 for x = 0, 0.12, 0.2, 0.5 and 1.0. We show that the specific heat at the first-order transitions of the end compounds (x = 0 and 1), obtained using relaxation calorimetry, is up to a factor of 10 larger than that previously reported in the literature. The mixed compounds exhibit only the highest temperature transition to an presumably, incommensurate magnetic structure. A slope change of T-N versus x at x = 0.2 indicates the transition from the Ni3V2O8- to Co3V2O8-type magnetic structures. (C) 2007 Elsevier B.V. All rights reserved.
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