The structural and magnetic properties of Mn2-xFexNiGa Heusler alloys
Creators
- 1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)
- 2. School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130 (China)
- 3. School of Material Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083 (China)
Description
The effect of Fe substitution on the phase transformation and magnetic properties of Mn2NiGa has been studied. A single bcc phase was obtained in Mn2-xFexNiGa (x=0-0.6). With the substitution of Fe for Mn, the lattice constant decreases gradually. The martensitic transformation can be observed when x=0-0.3. Both the martensitic transformation and austenitic transformation temperatures decrease monotonically with increasing Fe content, which is different from common electron concentration dependence in Ni-Mn-Ga system. The saturation magnetizations Ms of Mn2-xFexNiGa in both austenitic and martensitic phases increase obviously with the doping of Fe, while the variation of TC shows an opposite tendency. Theoretical calculations indicate that both austenitic and martensitic phases are ferrimagnets. The Fe moment varies from positive to negative after the tetragonal distortion, which leads to the decrease of the saturation magnetization.
Additional details
Identifiers
- DOI
- 10.1063/1.3269722;
Publishing Information
- Journal Title
- Journal of Applied Physics
- Journal Volume
- 107
- Journal Issue
- 1
- Journal Page Range
- p. 013905-013905.5
- ISSN
- 0021-8979
- CODEN
- JAPIAU
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 42069523
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- AUSTENITIC STEELS; BCC LATTICES; CONCENTRATION RATIO; ELECTRONS; FERRIMAGNETIC MATERIALS; GALLIUM ALLOYS; HEUSLER ALLOYS; IRON; LATTICE PARAMETERS; MAGNETIC PROPERTIES; MAGNETIZATION; MARTENSITIC STEELS; NICKEL ALLOYS; PHASE TRANSFORMATIONS
- Descriptors DEC
- ALLOYS; ALUMINIUM ALLOYS; CARBON ADDITIONS; COPPER ALLOYS; COPPER BASE ALLOYS; CORROSION RESISTANT ALLOYS; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CUBIC LATTICES; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; IRON ALLOYS; IRON BASE ALLOYS; LEPTONS; MAGNETIC MATERIALS; MANGANESE ALLOYS; MATERIALS; METALS; PHYSICAL PROPERTIES; STEELS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS
Optional Information
- Notes
- (c) 2010 American Institute of Physics