6533b7d4fe1ef96bd1262932
RESEARCH PRODUCT
Half-metallic compensated ferrimagnetism with a tunable compensation point over a wide temperature range in the Mn-Fe-V-Al Heusler system
Ajaya K. NayakRolf StinshoffStanislav ChadovGerhard H. FecherBenjamin BalkeClaudia FelserSiham OuardiTetsuya Nakamurasubject
Materials scienceSpintronicsCondensed matter physicsGeneral Physics and Astronomy02 engineering and technologyengineering.materialAtmospheric temperature range021001 nanoscience & nanotechnologyHeusler compound01 natural scienceslcsh:QC1-999Compensation (engineering)Geomagnetic reversalCondensed Matter::Materials ScienceHall effectFerrimagnetism0103 physical sciencesengineeringCondensed Matter::Strongly Correlated Electrons010306 general physics0210 nano-technologyValence electronlcsh:Physicsdescription
The cubic Heusler compound Mn1.5FeV0.5Al with the L21 Heusler structure is the first fully compensated half-metallic ferrimagnet with 24 valence electrons. The ferrimagnetic state can be tuned by changing the composition such that the compensation point appears at finite temperatures ranging from 0 K up to 226 K, while retaining half-metallicity in the system. In this paper, the structural, magnetic and transport properties of the Mn-Fe-V-Al system are discussed. Magnetic reversal and a change of sign of the anomalous Hall effect were observed at the compensation point, which gives rise to a sublattice spin-crossing. These materials present new possibilities for potential spintronic devices because of their advantageous properties such as imperceptibility to external fields, lower power consumption and ultrafast switching in the THz region.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-10-01 | AIP Advances |