Strain-Dependence of the Structure and Ferroic Properties of Epitaxial NiTiO3 Thin Films Grown on Different Substrates
Polarization-induced weak ferromagnetism has been predicted a few years back in perovskite MTiO3 (M = Fe, Mn, and Ni). We set out to stabilize this metastable perovskite structure by growing NiTiO3 epitaxially on different substrates and to investigate the dependence of polar and magnetic properties...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2015/493045 |
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| author | Tamas Varga Timothy C. Droubay Mark E. Bowden Libor Kovarik Dehong Hu Scott A. Chambers |
| author_facet | Tamas Varga Timothy C. Droubay Mark E. Bowden Libor Kovarik Dehong Hu Scott A. Chambers |
| author_sort | Tamas Varga |
| collection | DOAJ |
| description | Polarization-induced weak ferromagnetism has been predicted a few years back in perovskite MTiO3 (M = Fe, Mn, and Ni). We set out to stabilize this metastable perovskite structure by growing NiTiO3 epitaxially on different substrates and to investigate the dependence of polar and magnetic properties on strain. Epitaxial NiTiO3 films were deposited on Al2O3, Fe2O3, and LiNbO3 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 NiTiO3 thin films by the choice of substrate. Our results are also consistent with the theoretical prediction that the ferromagnetism in acentric NiTiO3 is polarization induced. From the substrates studied here, the perovskite substrate LiNbO3 proved to be the most promising one for strong multiferroism. |
| format | Article |
| id | doaj-art-52a0c9f690244a699fda5bdac73529c5 |
| institution | Kabale University |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-52a0c9f690244a699fda5bdac73529c52025-02-03T01:23:17ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242015-01-01201510.1155/2015/493045493045Strain-Dependence of the Structure and Ferroic Properties of Epitaxial NiTiO3 Thin Films Grown on Different SubstratesTamas Varga0Timothy C. Droubay1Mark E. Bowden2Libor Kovarik3Dehong Hu4Scott A. Chambers5Environmental Molecular Sciences Laboratory, Richland, WA 99354, USAFundamental and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USAEnvironmental Molecular Sciences Laboratory, Richland, WA 99354, USAEnvironmental Molecular Sciences Laboratory, Richland, WA 99354, USAEnvironmental Molecular Sciences Laboratory, Richland, WA 99354, USAFundamental and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USAPolarization-induced weak ferromagnetism has been predicted a few years back in perovskite MTiO3 (M = Fe, Mn, and Ni). We set out to stabilize this metastable perovskite structure by growing NiTiO3 epitaxially on different substrates and to investigate the dependence of polar and magnetic properties on strain. Epitaxial NiTiO3 films were deposited on Al2O3, Fe2O3, and LiNbO3 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 NiTiO3 thin films by the choice of substrate. Our results are also consistent with the theoretical prediction that the ferromagnetism in acentric NiTiO3 is polarization induced. From the substrates studied here, the perovskite substrate LiNbO3 proved to be the most promising one for strong multiferroism.http://dx.doi.org/10.1155/2015/493045 |
| spellingShingle | Tamas Varga Timothy C. Droubay Mark E. Bowden Libor Kovarik Dehong Hu Scott A. Chambers Strain-Dependence of the Structure and Ferroic Properties of Epitaxial NiTiO3 Thin Films Grown on Different Substrates Advances in Condensed Matter Physics |
| title | Strain-Dependence of the Structure and Ferroic Properties of Epitaxial NiTiO3 Thin Films Grown on Different Substrates |
| title_full | Strain-Dependence of the Structure and Ferroic Properties of Epitaxial NiTiO3 Thin Films Grown on Different Substrates |
| title_fullStr | Strain-Dependence of the Structure and Ferroic Properties of Epitaxial NiTiO3 Thin Films Grown on Different Substrates |
| title_full_unstemmed | Strain-Dependence of the Structure and Ferroic Properties of Epitaxial NiTiO3 Thin Films Grown on Different Substrates |
| title_short | Strain-Dependence of the Structure and Ferroic Properties of Epitaxial NiTiO3 Thin Films Grown on Different Substrates |
| title_sort | strain dependence of the structure and ferroic properties of epitaxial nitio3 thin films grown on different substrates |
| url | http://dx.doi.org/10.1155/2015/493045 |
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