The DOI matches its Crossref record; 13 of the 13 references it cites were found in a registry or an index.
Co 2 Mn Si Heusler alloy as magnetic electrodes in magnetic tunnel junctions
Abstract
As a consequence of the growing theoretical predictions of 100% spin-polarized half- and full-Heusler compounds over the past six years, Heusler alloys are among the most promising materials class for future magnetoelectronic and spintronic applications. We have integrated Co2MnSi, as a representative of the full-Heusler compound family, as one magnetic electrode into magnetic tunnel junctions. The preparation strategy has been chosen so as to sputter Co2MnSi at room temperature onto a V-buffer layer, which assists in (110) texture formation, and to deposit the Al-barrier layer directly thereafter. After plasma oxidizing the Al-barrier layer, subsequent annealing leads (1) to the texture formation and (2) to the appropriate atomic ordering within the Co2MnSi, and (3) homogenizes the AlOx barrier. It is shown that the magnetic switching of the ferromagnetic electrodes is well controlled from room temperature down to 10K. The resulting tunnel magnetoresistance-effect amplitude of the Co2MnSi containing magnetic tunnel junctions has been determined as a function of temperature and the spin polarization of the Co2MnSi Heusler compound has been estimated to be 61% at 10K. Thus, the spin polarization of the Co2MnSi layer at 10K exceeds that of conventional transition metals.
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Cites
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Slater-Pauling behavior and origin of the half-metallicity of the full-Heusler alloys
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Origin and properties of the gap in the half-ferromagnetic Heusler alloys
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Cited by
Investigation of Co2FeSi: The Heusler compound with highest Curie temperature and magnetic moment
Wurmehl, S., Fecher, G. H., Kandpal, H. C., Ksenofontov, V., Felser, C., & Lin, H.-J. (2006) · Applied Physics Letters · doi:10.1063/1.2166205 · Cited by 428
Magnetoresistive Sensor Development Roadmap (Non-Recording Applications)
Zheng, C., Zhu, K., Cardoso de Freitas, S., Chang, J.-Y., Davies, J. E., Eames, P., Freitas, P. P., Kazakova, O., Kim, C., Leung, C.-W., et al. (2019) · IEEE Transactions on Magnetics · doi:10.1109/tmag.2019.2896036 · Cited by 268
Correlation in the transition-metal-based Heusler compoundsCo2MnSiandCo2FeSi
Kandpal, H. C., Fecher, G. H., Felser, C., & Schönhense, G. (2006) · Physical Review B · doi:10.1103/physrevb.73.094422 · Cited by 268
Role of conduction electrons in mediating exchange interactions in Mn-based Heusler alloys
Şaşıoğlu, E., Sandratskii, L. M., & Bruno, P. (2008) · Physical Review B · doi:10.1103/physrevb.77.064417 · Cited by 219
Metadata
- Authors
- Kämmerer, S., Thomas, A., Hütten, A., & Reiss, G.
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2004-07-05
- Volume
- 85
- Issue
- 1
- Pages
- 79-81
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W2023793006
- Cited by
- 306
- References
- 13
- FWCI
- 19.78
- Type
- journal article
- Language
- en
- Open access
- closed
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