Strain-driven noncollinear magnetic ordering in orthorhombic epitaxial YMnO<inf>3</inf> thin films

X. Marti, V. Skumryev, V. Laukhin, R. Bachelet, C. Ferrater, M. V. García-Cuenca, M. Varela, F. Sánchez, J. Fontcuberta

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24 Citations (Scopus)

Abstract

We show that using epitaxial strain and chemical pressure in orthorhombic YMnO3 and Co-substituted (YMn0.95 Co0.05 O 3) thin films, a ferromagnetic response can be gradually introduced and tuned. These results, together with the measured anisotropy of the magnetic response, indicate that the unexpected observation of ferromagnetism in orthorhombic o-RMnO3 (R=Y,Ho,Tb, etc.) films originates from strain-driven breaking of the fully compensated magnetic ordering by pushing magnetic moments away from the antiferromagnetic [010] axis. We show that the resulting canting angle and the subsequent ferromagnetic response, gradually increase (up to ∼1.2°) by compression of the unit cell. We will discuss the relevance of these findings, in connection to the magnetoelectric response of orthorhombic manganites. © 2010 American Institute of Physics.
Original languageEnglish
Article number123917
JournalJournal of applied physics
Volume108
DOIs
Publication statusPublished - 15 Dec 2010

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