Giant negative thermal expansion in bonded MnCoGe-based compounds with Ni2In-type hexagonal structure.

YY, Zhao; FX, Hu; LF, Bao; J, Wang; H, Wu; QZ, Huang; RR, Wu; Y, Liu; FR, Shen; H, Kuang; M, Zhang; WL, Zuo; XQ, Zheng; JR, Sun; BG, Shen

doi:10.1021/ja510693a

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Giant negative thermal expansion in bonded MnCoGe-based compounds with Ni2In-type hexagonal structure.

Shared by NobleBlocks on Feb 2, 2015 • 12:00 AM UTC

Authors:

Zhao YY

Hu FX

Bao LF

Abstract

MnCoGe-based compounds undergo a giant negative thermal expansion (NTE) during the martensitic structural transition from Ni2In-type hexagonal to TiNiSi-type orthorhombic structure. High-resolution neutron diffraction experiments revealed that the expansion of unit cell volume can be as large as ΔV/...

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