Simulation of multilevel cell spin transfer switching in a full-Heusler alloy spin-valve nanopillar

A multilevel cell spin transfer switching process in a full-Heusler Co2FeAl0.5Si0.5 alloy spin-valve nanopillar was investigated using micromagnetic simulations. An intermediate state of two-step spin transfer magnetization switching was reported due to the four-fold magnetocrystalline anisotropy; h...

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Published in:Applied physics letters 2013-01, Vol.102 (4)
Main Authors: Huang, H. B., Ma, X. Q., Liu, Z. H., Zhao, C. P., Shi, S. Q., Chen, L. Q.
Format: Article
Language:English
Subjects:
Magnetic anisotropy
Magnetization
Multilevel
Nanocomposites
Nanomaterials
Nanostructure
Simulation
Switching
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container_title Applied physics letters
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creator Huang, H. B.
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description A multilevel cell spin transfer switching process in a full-Heusler Co2FeAl0.5Si0.5 alloy spin-valve nanopillar was investigated using micromagnetic simulations. An intermediate state of two-step spin transfer magnetization switching was reported due to the four-fold magnetocrystalline anisotropy; however, we discovered the intermediate state has two possible directions of −90° and +90°, which could not be detected in the experiments due to the same resistance of the −90° state and the +90° state. The domain structures were analyzed to determine the mechanism of domain wall motion and magnetization switching under a large current. Based on two intermediate states, we reported a multilevel bit spin transfer multi-step magnetization switching by changing the magnetic anisotropy in a full-Heusler alloy nanopillar.
doi_str_mv 10.1063/1.4789867
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source American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list); AIP_美国物理联合会现刊（与NSTL共建）
subjects Magnetic anisotropy
Magnetization
Multilevel
Nanocomposites
Nanomaterials
Nanostructure
Simulation
Switching
title Simulation of multilevel cell spin transfer switching in a full-Heusler alloy spin-valve nanopillar
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