New Insulating Layered Network 3D-Ferromagnets Composed of the Divalent Metal Perrhenates: Fe(ReO4)2, Co(ReO4)2 and Ni(ReO4)2

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS（2006）

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摘要

A variety of a.c. and d.c. magnetrometry data as well as iron-57 Mossbauer spectra show that the structurally layered divalent metal perrhenates: M(ReO4)(2) (M = Ni, Fe, Co) have three dimensional ferromagnetic ground states with Curie temperatures of 12.5 K, 8.5 K and 4.7 K respectively. The nickel compound exhibits a substantial coercivity (similar to 0.26 T) at 4.2 K.

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关键词

nickel,three dimensional,iron,curie temperature,ground state

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