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Multiferroic bilayers of manganites and titanates
Author(s) -
Dörr K.,
Thiele C.
Publication year - 2006
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200562441
Subject(s) - manganite , materials science , condensed matter physics , curie temperature , ferroelectricity , ferromagnetism , multiferroics , dielectric , optoelectronics , physics
Isostructural ferromagnetic and ferroelectric perovskites like manganites (La,A)MnO 3 and titanates Pb(Zr,Ti)O 3 are favourable candidates for layered film structures with large magnetoelectric coupling phenomena. Manganites (La,A)MnO 3 have already been intensively investigated: conduction electrons have a high degree of spin polarization and are strongly coupled to lattice degrees of freedom, making electric transport sensitive to lattice distortions. Epitaxial film systems of manganites and titanates have been prepared by off‐axis pulsed laser deposition (PLD). Field effect devices of La 1– x A x MnO 3 (A = Sr; Ca; Ce) and PbZr 0.52 Ti 0.48 O 3 (PZT) show channel resistance modulation from both, (i) the electric field effect at the PZT‐manganite interface and (ii) the biaxial strain induced by the inverse piezoeffect of PZT. Piezoelectric substrates have been employed to dynamically control the in‐plane strain state of manganite films, revealing strain‐dependent variation of the ferromagnetic Curie temperature and the resistance. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)