Brandlmaier, A. and Gepraegs, S. and Woltersdorf, G. and Gross, R. and Goennenwein, S. T. B. (2011) Nonvolatile, reversible electric-field controlled switching of remanent magnetization in multifunctional ferromagnetic/ferroelectric hybrids. JOURNAL OF APPLIED PHYSICS, 110 (4): 043913. ISSN 0021-8979,
Full text not available from this repository. (Request a copy)Abstract
In spin-mechanics, the magnetoelastic coupling in ferromagnetic/ferroelectric hybrid devices is exploited in order to realize an electric-voltage control of magnetization orientation. To this end, different voltage-induced elastic strain states are used to generate different magnetization orientations. In our approach, we take advantage of the hysteretic expansion and contraction of a commercial piezoelectric actuator as a function of electrical voltage to deterministically select one of two electro-remanent elastic strain states. We investigate the resulting magnetic response in a nickel thin film/piezoelectric actuator hybrid device at room temperature, using simultaneous magneto-optical Kerr effect and magnetotransport measurements. The magnetic properties of the hybrid can be consistently described in a macrospin model, i.e., in terms of a single magnetic domain. At zero external magnetic field, the magnetization orientation in the two electro-remanent strain states differs by 15 degrees, which corresponds to a magnetoresistance change of 0.5%. These results demonstrate that the spin-mechanics scheme indeed enables a nonvolatile electrically read-and writable memory bit where the information is encoded in a magnetic property. (C) 2011 American Institute of Physics. [doi:10.1063/1.3624663]
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | THIN-FILMS; VOLTAGE CONTROL; ALLOYS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 02 Jun 2020 09:12 |
| Last Modified: | 02 Jun 2020 09:12 |
| URI: | https://pred.uni-regensburg.de/id/eprint/20395 |
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