Magnetic Anomaly and Dielectric Tunability of (Sr,Mn)TiO3 Thin Films
authors Tkach, A; Okhay, O; Wu, AY; Vilarinho, PM; Bedanta, S; Shvartsman, VV; Borisov, P
nationality International
author keywords Multiferroics; thin films; magnetisation; dielectric polarisation; permittivity; dielectric losses; electric field effects; sol-gel processing
abstract Polycrystalline Sr0.98Mn0.02TiO3 thin films are prepared by sol-gel spin-coating method on Si/SiO2/TiO2/Pt substrates. Their dielectric permittivity, polarization, and magnetization are investigated as a function of temperature (from 10 to 300 K), electric and magnetic fields. Temperature dependences of the magnetization MZFC-FH(T), real part of the dielectric permittivity epsilon' (T), and dissipation factor tand(T) of Sr0.98Mn0.02TiO3 films show anomalies around 41-45 K, implying an interrelation between polar and magnetic order. "Butterfly"-like dc bias dependences of the real part of the dielectric permittivity epsilon' (Edc), as well as slim polarization and magnetization hysteresis loops are observed, suggesting that Sr0.98Mn0.02TiO3 thin films belong to "multiglass" systems.
issn 0015-0193
year published 2012
volume 426
beginning page 274
ending page 281
digital object identifier (doi) 10.1080/00150193.2012.672038
web of science category Materials Science, Multidisciplinary; Physics, Condensed Matter
subject category Materials Science; Physics
unique article identifier WOS:000304266300037
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