Print Email Facebook Twitter Thermal-history dependent magnetoelastic transition in (Mn,Fe)2(P,Si) Title Thermal-history dependent magnetoelastic transition in (Mn,Fe)2(P,Si) Author Miao, X.F. Caron, L. Gercsi, Z. Daoud-Aladine, A. Van Dijk, N.H. Brück, E. Faculty Applied Sciences Department RST/Radiation, Science and Technology Date 2015-07-27 Abstract The thermal-history dependence of the magnetoelastic transition in (Mn,Fe)2(P,Si) compounds has been investigated using high-resolution neutron diffraction. As-prepared samples display a large difference in paramagnetic-ferromagnetic (PM-FM) transition temperature compared to cycled samples. The initial metastable state transforms into a lower-energy stable state when the as-prepared sample crosses the PM-FM transition for the first time. This additional transformation is irreversible around the transition temperature and increases the energy barrier which needs to be overcome through the PM-FM transition. Consequently, the transition temperature on first cooling is found to be lower than on subsequent cycles characterizing the so-called “virgin effect.” High-temperature annealing can restore the cycled sample to the high-temperature metastable state, which leads to the recovery of the virgin effect. A model is proposed to interpret the formation and recovery of the virgin effect. Subject neutron diffractioncrystal structureCurie pointthermoelasticitylattice constants To reference this document use: http://resolver.tudelft.nl/uuid:e634417e-573d-47ea-89d0-52042d64b025 Publisher American Institute of Physics ISSN 0003-6951 Source https://doi.org/10.1063/1.4927285 Source Applied Physics Letters, 107 (4), 2015 Part of collection Institutional Repository Document type journal article Rights © 2015 AIP Publishing Files PDF Miao_2015.pdf 985.35 KB Close viewer /islandora/object/uuid:e634417e-573d-47ea-89d0-52042d64b025/datastream/OBJ/view