publication . Article . Other literature type . 2015

Magnetocaloric effect and magnetostructural coupling in Mn0.92Fe0.08CoGe compound

Wang, J. L.; Shamba, P.; Hutchison, W. D.; Gu, Q. F.; Md Din, M. F.; Ren, Q. Y.; Cheng, Z. X.; Kennedy, S. J.; Campbell, S. J.; Dou, S. X.;
Open Access English
  • Published: 07 May 2015
  • Publisher: AIP
  • Country: United Kingdom
Abstract
The structural properties of Mn0.92Fe0.08CoGe have been investigated in detail using synchrotron x-ray diffraction in zero and applied pressure (p = 0-10 GPa). A ferromagnetic transition occurs around TC = 300 K and a large magnetic-entropy change -ΔSM = 17.3 J/kg K detected at TC for a field change of ΔB = 5 T. The field dependence of -ΔSM max can be expressed as -ΔSM max ∞ B. At ambient temperature and pressure, Mn0.92Fe0.08CoGe exhibits a co-existence of the orthorhombic TiNiSi-type structure (space group Pnma) and hexagonal Ni2In-type structure (space group P63/mmc). Application of external pressure drives a structure change from the orthorhombic TiNiSi-type...
Subjects
free text keywords: Physics, Nuclear magnetic resonance, Magnetic refrigeration, Debye model, symbols.namesake, symbols, Space group, Condensed matter physics, Heat capacity, Orthorhombic crystal system, Ferromagnetism, X-ray crystallography, Crystal structure
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