Effects of Fe doping on anomalous specific heat and XAFS oscillation in antiferromagnetic metal Mn3Si
Source abstract
Abstract
The specific heat of Mn3−xFexSi 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 x = 0.2; however, its contribution decreased when x = 1.0. It is observed that the net component was retained at temperatures significantly higher than TN for both x. The XAFS spectra of the Mn K-edge for x = 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 in terms of the charge degree of freedom or electronic inhomogeneity.
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Research context
OpenAlex topics: Rare-earth and actinide compounds · Magnetic and transport properties of perovskites and related materials · Heusler alloys: electronic and magnetic properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Neutron Science Research Center, Korea Atomic Energy Research Institute 1 , Daejeon 34057, Korea
Graduate School of Science and Engineering, Ibaraki University 2 , Tokai, Ibaraki 319-1106, Japan
Graduate School of Science and Engineering, Saitama University 3 , Saitama 338-8570, Japan
Materials Sciences Research Center, Japan Atomic Energy Agency 4 , Sayo, Hyogo 679-5148, Japan
Funding
Korea Atomic Energy Research Institute · Japan Society for the Promotion of Science
References (11)
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