Thermal expansion of monogermanides of 3d-metals

Authors:
G. A. Valkovskiy, E. V. Altynbaev, M. D. Kuchugura, E. G. Yashina, A. S. Sukhanov, V. A. Dyadkin, A. V. Tsvyashchenko, V. A. Sidorov, L. N. Fomicheva, E. Bykova, S. V. Ovsyannikov, D. Yu. Chernyshov, S. V. Grigoriev
The year of the publication:
2016
Journal:
Journal of Physics N 37 vol. 28
Keywords:
MnGe, B20 structure, Debye–Gruneisen model, interatomic distances
Abstract:

Temperature dependent powder and single-crystal synchrotron diffraction, specific heat, magnetic susceptibility and small-angle neutron scattering experiments have revealed an anomalous response of MnGe. The anomaly becomes smeared out with decreasing Mn content in Mn1−xCoxGe and Mn1−xFexGe solid solutions. Mn spin state instability is discussed as a possible candidate for the observed effects.

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