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Voltage Control of Two-Magnon Scattering and Induced Anomalous Magnetoelectric Coupling in Ni–Zn Ferrite
- Source :
- ACS Applied Materials & Interfaces; December 2017, Vol. 9 Issue: 49 p43188-43196, 9p
- Publication Year :
- 2017
-
Abstract
- Controlling spin dynamics through modulation of spin interactions in a fast, compact, and energy-efficient way is compelling for its abundant physical phenomena and great application potential in next-generation voltage controllable spintronic devices. In this work, we report electric field manipulation of spin dynamicsthe two-magnon scattering (TMS) effect in Ni0.5Zn0.5Fe2O4(NZFO)/Pb(Mg2/3Nb1/3)–PbTiO3(PMN–PT) multiferroic heterostructures, which breaks the bottleneck of magnetostatic interaction-based magnetoelectric (ME) coupling in multiferroics. An alternative approach allowing spin-wave damping to be controlled by external electric field accompanied by a significant enhancement of the ME effect has been demonstrated. A two-way modulation of the TMS effect with a large magnetic anisotropy change up to 688 Oe has been obtained, referring to a 24 times ME effect enhancement at the TMS critical angle at room temperature. Furthermore, the anisotropic spin-freezing behaviors of NZFO were first determined via identifying the spatial magnetic anisotropy fluctuations. A large spin-freezing temperature change of 160 K induced by the external electric field was precisely determined by electron spin resonance.
Details
- Language :
- English
- ISSN :
- 19448244
- Volume :
- 9
- Issue :
- 49
- Database :
- Supplemental Index
- Journal :
- ACS Applied Materials & Interfaces
- Publication Type :
- Periodical
- Accession number :
- ejs44037193
- Full Text :
- https://doi.org/10.1021/acsami.7b15433