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- Title
Magnetism and magnetocaloric effect of Mn<sub>0.98</sub>Fe<sub>0.02</sub>CoGe.
- Authors
Ren, Q. Y.; Hutchison, W. D.; Wang, J. L.; Pérez, S. Muñoz; Cadogan, J. M.; Campbell, S. J.
- 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 −Δ SM = 24(1) J kg−1 K−1 for Δ B = 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.
- Subjects
MAGNETIC properties; MAGNETISM; MAGNETOCALORIC effects; X-ray diffraction; NEUTRON diffraction; GAUSSIAN distribution; MAGNETIC entropy
- Publication
Physica Status Solidi. A: Applications & Materials Science, 2014, Vol 211, Issue 5, p1101
- ISSN
1862-6300
- Publication type
Article
- DOI
10.1002/pssa.201330561