Journal
APPLIED PHYSICS LETTERS
Volume 98, Issue 21, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3595318
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Funding
- IMR, Tohoku University
- Grants-in-Aid for Scientific Research [22226001, 23656003] Funding Source: KAKEN
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The coercivity (H(c)) of a perpendicularly magnetized FePt layer was modulated by applying the voltage (V(app)) to a Hall device through MgO and Al-O insulating layers. A change in similar to 40 Oe in H(c) was observed by changing V(app) from -13 to 13 V. From the quantitative analysis of the voltage effect on H(c), the change in the anisotropy energy by voltage application was evaluated to be 18.6 fJ/V m, which was of the same order as the theoretical prediction. The role of the MgO layer for the voltage effect was also discussed. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3595318]
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