RT Journal Article
T1 Large dielectric response to the paramagnetic-ferromagnetic transition (T_(C) ~ 100 K) in multiferroic BiMnO_(3) epitaxial thin films
A1 Schmidt, Rainer
A1 Eerenstein, Wilma
A1 Midgley, Paul A.
AB The dielectric properties of multiferroic BiMnO_(3) 50 nm epitaxial thin films grown on Nb-doped SrTiO_(3)(001) substrates were analyzed by impedance spectroscopy between 55 and 155 K. One single intrinsic thin film dielectric relaxation process was deconvoluted from an extrinsic electrode interface contribution by the use of an equivalent circuit. The paramagnetic-ferromagnetic transition (T_(C) ~ 100 K was reflected by a large peak in the thin film relative dielectric permittivity. The weak dielectric response at T_(C) observed previously in BiMnO_(3) polycrystals is largely enhanced in thin films. Intrinsic noninsulating thin film resistivity below T_(C) was detected.
PB American Physical Society
SN 1098-0121
YR 2009
FD 2009-06-11
LK https://hdl.handle.net/20.500.14352/44711
UL https://hdl.handle.net/20.500.14352/44711
LA eng
NO © 2009 The American Physical Society. The authors wish to thank Finlay Morrison, Ian Reaney, and Jan Pokorny for useful discussions. R.S. wishes to acknowledge financial support from the Leverhulme Trust. W.E. is grateful to the EU.
NO Leverhulme Trust
DS Docta Complutense
RD 11 abr 2025