Flexible Heteroepitaxy of CoFe2O4/Muscovite Bimorph with Large Magnetostriction

Heng Jui Liu; Chih Kuo Wang; Dong Su; Tahta Amrillah; Ying Hui Hsieh; Kun Hong Wu; Yi Chun Chen; Jenh Yih Juang; Lukas M. Eng; Shien Uang Jen; Ying Hao Chu

doi:10.1021/acsami.6b16485

Flexible Heteroepitaxy of CoFe₂O₄/Muscovite Bimorph with Large Magnetostriction

Heng Jui Liu, Chih Kuo Wang, Dong Su, Tahta Amrillah, Ying Hui Hsieh, Kun Hong Wu, Yi Chun Chen, Jenh Yih Juang, Lukas M. Eng, Shien Uang Jen, Ying Hao Chu

Research output: Contribution to journal › Article › peer-review

102 Citations (Scopus)

Abstract

A bimorph composed of ferrimagnetic cobalt ferrite (CoFe₂O₄, CFO) and flexible muscovite was fabricated via van der Waals epitaxy. The combination of X-ray diffraction and transmission electron microscopy was conducted to reveal the heteroepitaxy of the CFO/muscovite system. The robust magnetic behaviors against mechanical bending were characterized by hysteresis measurements and magnetic force microscopy, which maintain a saturation magnetization (M_s) of ∼120-150 emu/cm³ under different bending states. The large magnetostrictive response of the CFO film was then determined by digital holographic microscopy, where the difference of magnetostrction coefficient (δ λ) is -104 ppm. The superior performance of this bimorph is attributed to the nature of weak interaction between film and substrate. Such a flexible CFO/muscovite bimorph provides a new platform to develop next-generation flexible magnetic devices.

Original language	English
Pages (from-to)	7297-7304
Number of pages	8
Journal	ACS applied materials & interfaces
Volume	9
Issue number	8
DOIs	https://doi.org/10.1021/acsami.6b16485
Publication status	Published - 1 Mar 2017
Externally published	Yes

Keywords

cobalt ferrite (CoFeO)
flexible magnetic devices
magnetostriction
muscovite (mica)
van der Waals epitaxy

Access to Document

10.1021/acsami.6b16485

Cite this

@article{482f0bd6574a4c7bac86c2ac5cbc7686,

title = "Flexible Heteroepitaxy of CoFe2O4/Muscovite Bimorph with Large Magnetostriction",

abstract = "A bimorph composed of ferrimagnetic cobalt ferrite (CoFe2O4, CFO) and flexible muscovite was fabricated via van der Waals epitaxy. The combination of X-ray diffraction and transmission electron microscopy was conducted to reveal the heteroepitaxy of the CFO/muscovite system. The robust magnetic behaviors against mechanical bending were characterized by hysteresis measurements and magnetic force microscopy, which maintain a saturation magnetization (Ms) of ∼120-150 emu/cm3 under different bending states. The large magnetostrictive response of the CFO film was then determined by digital holographic microscopy, where the difference of magnetostrction coefficient (δ λ) is -104 ppm. The superior performance of this bimorph is attributed to the nature of weak interaction between film and substrate. Such a flexible CFO/muscovite bimorph provides a new platform to develop next-generation flexible magnetic devices.",

keywords = "cobalt ferrite (CoFeO), flexible magnetic devices, magnetostriction, muscovite (mica), van der Waals epitaxy",

author = "Liu, {Heng Jui} and Wang, {Chih Kuo} and Dong Su and Tahta Amrillah and Hsieh, {Ying Hui} and Wu, {Kun Hong} and Chen, {Yi Chun} and Juang, {Jenh Yih} and Eng, {Lukas M.} and Jen, {Shien Uang} and Chu, {Ying Hao}",

note = "Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

year = "2017",

month = mar,

day = "1",

doi = "10.1021/acsami.6b16485",

language = "English",

volume = "9",

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journal = "ACS applied materials & interfaces",

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TY - JOUR

T1 - Flexible Heteroepitaxy of CoFe2O4/Muscovite Bimorph with Large Magnetostriction

AU - Liu, Heng Jui

AU - Wang, Chih Kuo

AU - Su, Dong

AU - Amrillah, Tahta

AU - Hsieh, Ying Hui

AU - Wu, Kun Hong

AU - Chen, Yi Chun

AU - Juang, Jenh Yih

AU - Eng, Lukas M.

AU - Jen, Shien Uang

AU - Chu, Ying Hao

PY - 2017/3/1

Y1 - 2017/3/1

N2 - A bimorph composed of ferrimagnetic cobalt ferrite (CoFe2O4, CFO) and flexible muscovite was fabricated via van der Waals epitaxy. The combination of X-ray diffraction and transmission electron microscopy was conducted to reveal the heteroepitaxy of the CFO/muscovite system. The robust magnetic behaviors against mechanical bending were characterized by hysteresis measurements and magnetic force microscopy, which maintain a saturation magnetization (Ms) of ∼120-150 emu/cm3 under different bending states. The large magnetostrictive response of the CFO film was then determined by digital holographic microscopy, where the difference of magnetostrction coefficient (δ λ) is -104 ppm. The superior performance of this bimorph is attributed to the nature of weak interaction between film and substrate. Such a flexible CFO/muscovite bimorph provides a new platform to develop next-generation flexible magnetic devices.

AB - A bimorph composed of ferrimagnetic cobalt ferrite (CoFe2O4, CFO) and flexible muscovite was fabricated via van der Waals epitaxy. The combination of X-ray diffraction and transmission electron microscopy was conducted to reveal the heteroepitaxy of the CFO/muscovite system. The robust magnetic behaviors against mechanical bending were characterized by hysteresis measurements and magnetic force microscopy, which maintain a saturation magnetization (Ms) of ∼120-150 emu/cm3 under different bending states. The large magnetostrictive response of the CFO film was then determined by digital holographic microscopy, where the difference of magnetostrction coefficient (δ λ) is -104 ppm. The superior performance of this bimorph is attributed to the nature of weak interaction between film and substrate. Such a flexible CFO/muscovite bimorph provides a new platform to develop next-generation flexible magnetic devices.

KW - cobalt ferrite (CoFeO)

KW - flexible magnetic devices

KW - magnetostriction

KW - muscovite (mica)

KW - van der Waals epitaxy

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