RIS ID
90559
Abstract
The crystallographic and magnetic properties of Mn0.98Fe0.02CoGe have been investigated by X-ray diffraction, dc magnetization and neutron diffraction over the temperature range 20-450 K. The temperature dependence of the phase fractions of the orthorhombic and hexagonal phases is described well by a Gaussian distribution. The Mn0.98Fe0.02CoGe sample exhibits a first-order magneto-structural transition centred at TMS ∼ 297 K of FWHM ∼37 K with a magnetic entropy change of −ΔSM = 24(1) J kg−1 K−1 for ΔB = 0-5 T. Neutron diffraction indicates a ferromagnetic orthorhombic structure below TMS with only the Mn carrying magnetic moment (3.98(6) µB) at 20 K. The sample is paramagnetic in the hexagonal phase above TMS.
Grant Number
ARC/DP110102386
Publication Details
Ren, Q. Y., Hutchison, W. D., Wang, J. L., Perez, S. Munoz., Cadogan, J. M. & Campbell, S. J. (2014). Magnetism and magnetocaloric effect of Mn0.98Fe0.02CoGe. Physica Status Solidi A: Applications and Materials Science, 211 (5), 1101-1105.