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Title: Strain-Dependence of the Structure and Ferroic Properties of Epitaxial NiTiO 3 Thin Films Grown on Different Substrates

Abstract

Polarization-induced weak ferromagnetism has been predicted a few years back in perovskite MTiO 3 (M = Fe, Mn, and Ni). We set out to stabilize this metastable perovskite structure by growing NiTiO 3 epitaxially on different substrates and to investigate the dependence of polar and magnetic properties on strain. Epitaxial NiTiO 3 films were deposited on Al 2 O 3 , Fe 2 O 3 , and LiNbO 3 substrates by pulsed laser deposition and characterized using several techniques. The effect of substrate choice on lattice strain, film structure, and physical properties was investigated. Our structural data from X-ray diffraction and electron microscopy shows that substrate-induced strain has a marked effect on the structure and crystalline quality of the films. Physical property measurements reveal a dependence of the weak ferromagnetism and lattice polarization on strain and highlight our ability to control the ferroic properties in NiTiO 3 thin films by the choice of substrate. Our results are also consistent with the theoretical prediction that the ferromagnetism in acentric NiTiO 3 is polarization induced. From the substrates studied here, the perovskite substrate LiNbO 3 proved to be the most promising one for strong multiferroism.

Authors:
ORCiD logo [1];  [2];  [1];  [1];  [1];  [2]
  1. Environmental Molecular Sciences Laboratory, Richland, WA 99354, USA
  2. Fundamental and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1210103
Resource Type:
Journal Article: Published Article
Journal Name:
Advances in Condensed Matter Physics
Additional Journal Information:
Journal Name: Advances in Condensed Matter Physics Journal Volume: 2015; Journal ID: ISSN 1687-8108
Publisher:
Hindawi Publishing Corporation
Country of Publication:
Egypt
Language:
English

Citation Formats

Varga, Tamas, Droubay, Timothy C., Bowden, Mark E., Kovarik, Libor, Hu, Dehong, and Chambers, Scott A. Strain-Dependence of the Structure and Ferroic Properties of Epitaxial NiTiO 3 Thin Films Grown on Different Substrates. Egypt: N. p., 2015. Web. doi:10.1155/2015/493045.
Varga, Tamas, Droubay, Timothy C., Bowden, Mark E., Kovarik, Libor, Hu, Dehong, & Chambers, Scott A. Strain-Dependence of the Structure and Ferroic Properties of Epitaxial NiTiO 3 Thin Films Grown on Different Substrates. Egypt. doi:10.1155/2015/493045.
Varga, Tamas, Droubay, Timothy C., Bowden, Mark E., Kovarik, Libor, Hu, Dehong, and Chambers, Scott A. Thu . "Strain-Dependence of the Structure and Ferroic Properties of Epitaxial NiTiO 3 Thin Films Grown on Different Substrates". Egypt. doi:10.1155/2015/493045.
@article{osti_1210103,
title = {Strain-Dependence of the Structure and Ferroic Properties of Epitaxial NiTiO 3 Thin Films Grown on Different Substrates},
author = {Varga, Tamas and Droubay, Timothy C. and Bowden, Mark E. and Kovarik, Libor and Hu, Dehong and Chambers, Scott A.},
abstractNote = {Polarization-induced weak ferromagnetism has been predicted a few years back in perovskite MTiO 3 (M = Fe, Mn, and Ni). We set out to stabilize this metastable perovskite structure by growing NiTiO 3 epitaxially on different substrates and to investigate the dependence of polar and magnetic properties on strain. Epitaxial NiTiO 3 films were deposited on Al 2 O 3 , Fe 2 O 3 , and LiNbO 3 substrates by pulsed laser deposition and characterized using several techniques. The effect of substrate choice on lattice strain, film structure, and physical properties was investigated. Our structural data from X-ray diffraction and electron microscopy shows that substrate-induced strain has a marked effect on the structure and crystalline quality of the films. Physical property measurements reveal a dependence of the weak ferromagnetism and lattice polarization on strain and highlight our ability to control the ferroic properties in NiTiO 3 thin films by the choice of substrate. Our results are also consistent with the theoretical prediction that the ferromagnetism in acentric NiTiO 3 is polarization induced. From the substrates studied here, the perovskite substrate LiNbO 3 proved to be the most promising one for strong multiferroism.},
doi = {10.1155/2015/493045},
journal = {Advances in Condensed Matter Physics},
number = ,
volume = 2015,
place = {Egypt},
year = {Thu Jan 01 00:00:00 EST 2015},
month = {Thu Jan 01 00:00:00 EST 2015}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1155/2015/493045

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