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Applied Physics Letters / Volume 96 / Issue 22 / MAGNETISM AND SUPERCONDUCTIVITY

Appl. Phys. Lett. 96, 222505 (2010); http://dx.doi.org/10.1063/1.3443714 (3 pages)

Emergence of ferromagnetism in antiferromagnetic TbMnO3 by epitaxial strain

X. Marti1, V. Skumryev2, C. Ferrater3, M. V. García-Cuenca3, M. Varela3, F. Sánchez1, and J. Fontcuberta1

1Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain
2Departament de Física, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain and Institució Catalana de Recerca i Estudis Avançats (ICREA), 08010 Barcelona, Spain
3FAO and IN2UB, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain

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(Received 27 March 2010; accepted 13 May 2010; published online 2 June 2010)

We show that in oxide thin films of spiral antiferromagnetic orthorhombic TbMnO3, ferromagnetism emerges resulting from epitaxially induced strain. The unit cell volume can be tuned (contracting up to a 2%) by varying thickness and deposition conditions; it is found that the ferromagnetic response correlates with the unit cell deformation. Such effect of strain on the magnetic properties turns out to be similar to that occurring in collinear orthorhombic antiferromagnets such as YMnO3. Owing to the intimate relationship between magnetic order and ferroelectricity in TbMnO3 these results may provide a new route to induce magnetoelectric coupling and tailor their ferroelectric response.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

antiferromagnetic materials, ferromagnetic materials, internal stresses, magnetic epitaxial layers, terbium compounds

PACS

  • 75.70.Ak

    Magnetic properties of monolayers and thin films

  • 68.60.Bs

    Mechanical and acoustical properties

  • 75.50.Dd

    Nonmetallic ferromagnetic materials

  • 75.50.Ee

    Antiferromagnetics

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3443714

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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    X. Marti, I. Fina, V. Skumryev, C. Ferrater, M. Varela, L. Fábrega, F. Sánchez, and J. Fontcuberta, Appl. Phys. Lett. 95, 142903 (2009)APPLAB000095000014142903000001.


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