| Autor: |
Mei, Antonio B., Schlom, Darrell G., Tang, Yongjian, Grab, Jennifer L., Ralph, Daniel C., Schubert, Jürgen |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 8/20/2018, Vol. 113 Issue 8, pN.PAG-N.PAG, 4p, 3 Graphs |
| Abstrakt: |
Fe1−xRhx layers are grown with varying rhodium fraction x on (001)-oriented MgO substrates by molecular-beam epitaxy. Film structural, morphological, magnetic, and transport properties are investigated. At room temperature, layers are ferromagnetic (FM) for x < 0.48 and antiferromagnetic (AF) for x > 0.48. Separating the two magnetically ordered phases at x = 0.48 is an abrupt change in the Fe1−xRhx lattice parameter of Δa = 0.0028 nm (Δa/a = −0.9%). For AF layers, the FM state is recovered by heating across a first-order phase transition. The transition leads to a large resistivity modulation, Δρ/ρ = 80%, over a narrow temperature range, ΔT = 3 K, in stoichiometric Fe0.50Rh0.50/MgO(001). For samples with compositions deviating from x = 0.50, fluctuations broaden ΔT and defect scattering reduces Δρ/ρ. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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