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平賀 晴弘*; 大山 研司*; 小坂 昌史*; 松村 大樹
AIP Advances (Internet), 8(10), p.101424_1 - 101424_5, 2018/10
被引用回数:1 パーセンタイル:4.34(Nanoscience & Nanotechnology)The specific heat of MnFeSi was measured over a wide temperature range. Aside from the lattice and electronic specific heat components, another component had a significant contribution to the specific heat at low temperatures in the case of = 0.2; however, its contribution decreased when = 1.0. It is observed that the net component was retained at temperatures significantly higher than for both . The XAFS spectra of the Mn -edge for = 0 not only indicated a smooth structure near the edge, but also an unusually small amplitude in the extended high energy region; however, these features disappeared with Fe doping. The specific heat and XAFS data were discussed interms of the charge degree of freedom or electronic inhomogeneity.