Properties of sputtered full Heusler alloy Cr2MnSb and its application in a magnetic tunnel junction
- 30 August 2019
- journal article
- research article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 52 (49), 495002
- https://doi.org/10.1088/1361-6463/ab3fc6
Abstract
We deposit 30-nm thick Cr2MnSb films on a MgO (001) substrate by magnetron sputtering. X-ray diffraction reveals that the annealing promotes the crystallization of Cr2MnSb from amorphous at as-deposited state to partially crystallized phase, and that the crystallinity improves by raising the annealing temperature. The crystallized phase exhibits full B2 and partial L21 ordering after the annealing above 300oC. The magnetic and magneto-transport properties reveal that the annealed Cr2MnSb shows magnetic ordering up to ~350 K with small magnetic moment, 0.3µB/formula unit for the sample annealed at 300oC. We adopt Cr2MnSb as one of the electrodes in magnetic tunnel junctions, and observe the switching of junction resistance, when the magnetization direction is reversed by sweeping an external magnetic field.Funding Information
- Ministry of Education, Culture, Sports, Science and Technology (26103002)
- Japan Society for the Promotion of Science (19K05242)
This publication has 22 references indexed in Scilit:
- CubicThin Films: Crossing the Spin Gap with RutheniumPhysical Review Letters, 2014
- Simple rules for the understanding of Heusler compoundsProgress in Solid State Chemistry, 2011
- First-principles electronic and magnetic properties of the half-metallic antiferromagnetJournal of Magnetism and Magnetic Materials, 2009
- Effect of sputtering process on magnetic properties and crystal structure of Sm2Fe17Nx thin filmsJournal of Magnetism and Magnetic Materials, 2008
- Experimental validation of the anomalies in the electron density of states in semiconductor iron-vanadium-aluminum alloysLow Temperature Physics, 2007
- Ab initiodesign of half-metallic fully compensated ferrimagnets: The case of(, As, Sb, and Bi)Physical Review B, 2007
- Electronic structure and magnetic exchange coupling in ferromagnetic full Heusler alloysPhysical Review B, 2005
- Atomic disorder effects on half-metallicity of the full-Heusler alloys A first-principles studyPhysical Review B, 2004
- Molecular beam epitaxy of III–V diluted magnetic semiconductor (Ga,Mn)SbPhysica E: Low-dimensional Systems and Nanostructures, 2000
- Half-Metallic AntiferromagnetsPhysical Review Letters, 1995