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  Glavic, A.; Becher, C.; Voigt, J.; Schierle, E.; Weschke, E.; Fiebig, M.; Brückel, T.: Stability of spin-driven ferroelectricity in the thin-film limit: Coupling of magnetic and electric order in multiferroic TbMnO₃ films. Physical Review B 88 (2013), p. 054401/1-5

10.1103/PhysRevB.88.054401
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