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Voltage control of magnetism in NiZn ferrite/mica/PMNPT heterostructure with giant tunability and narrow linewidth

Authors :
Xinjun Wang
Hwaider Lin
Yuan Gao
Yunpeng Chen
Neville Sun
Nian X. Sun
Huaihao Chen
Menghui Li
Yifan He
Source :
Applied Physics Letters. 112:192903
Publication Year :
2018
Publisher :
AIP Publishing, 2018.

Abstract

Recently, large magnetoelectric coupling of a spinel/piezoelectric heterostructure has been reported. However, the linewidth of the spinel is very large due to lattice mismatch when ferrite is directly deposited on piezoelectric substrates. This indicates a large magnetic loss, which impedes the spinel/piezoelectric heterostructure from useful device applications. Mica is a well-known 2D material, which can be split manually layer by layer without the substrate clamping effect. In this report, NiZn ferrite was deposited on a mica substrate by a spin-spray deposition technique. Spin-spray deposition is a wet chemical synthesis technique involving several chemical reactions for generating high-quality crystalline spinel ferrite films with various compositions directly from an aqueous solution. The thickness of ferrite is 2 μm, and the linewidth of the ferromagnetic resonance (FMR) is 115 Oe which is suitable for RF/microwave devices. The large FMR field tuning of 605 Oe was observed in NiZn ferrite/mica/PMN-PT heterostructures with minimal substrate clamping effect by reducing the thickness of the mica substrate. These multiferroic heterostructures exhibiting combined giant magnetoelectric coupling and narrow ferromagnetic resonance linewidth offer great opportunities for flexible RF magnetic devices.

Details

ISSN :
10773118 and 00036951
Volume :
112
Database :
OpenAIRE
Journal :
Applied Physics Letters
Accession number :
edsair.doi...........87f8da8eb95d5a55fe8fd02a60d2e47c
Full Text :
https://doi.org/10.1063/1.5032101