Magnetic Anomaly and Dielectric Tunability of (Sr,Mn)TiO3 Thin Films

被引：3

作者：

Tkach, Alexander ^{[1
]}

Okhay, Olena ^{[1
]}

Wu, Aiying ^{[1
]}

Vilarinho, Paula M. ^{[1
]}

Bedanta, Subhankar ^{[2
]}

Shvartsman, Vladimir V. ^{[2
]}

Borisov, Pavel ^{[2
]}

机构：

[1] Univ Aveiro, Dept Ceram & Glass Engn, CICECO, P-3810193 Aveiro, Portugal

[2] Univ Duisburg Essen, D-47048 Duisburg, Germany

来源：

FERROELECTRICS | 2012年 / 426卷

关键词：

Multiferroics; thin films; magnetisation; dielectric polarisation; permittivity; dielectric losses; electric field effects; sol-gel processing;

D O I：

10.1080/00150193.2012.672038

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：274 / 281

页数：8

共 8 条

[1]

Dwight K., PHYS REV, V119, P1960

[2] (Sr, Mn) TiO3-a magnetoelectrically coupled multiglass [J].

Kleemann, W. ;

Shvartsman, V. V. ;

Bedanta, S. ;

Borisov, P. ;

Tkach, A. ;

Vilarinho, P. M. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2008, 20 (43)

[3] Dielectric response of polycrystalline Sr1-1.5xBixTiO3 thin films under direct current bias [J].

Okhay, Olena ;

Wu, Aiying ;

Vilarinho, Paula M. ;

Tkach, Alexander .

APPLIED PHYSICS LETTERS, 2010, 97 (06)

[4] Low temperature dielectric characterization of Mg-doped SrTiO3 thin films prepared by sol-gel [J].

Okhay, Olena ;

Wu, Aiying ;

Vilarinho, Paula M. ;

Tkach, Alexander .

APPLIED PHYSICS LETTERS, 2010, 96 (15)

[5] (Sr, Mn)TiO3: A Magnetoelectric Multiglass [J].

Shvartsman, V. V. ;

Bedanta, S. ;

Borisov, P. ;

Kleemann, W. ;

Tkach, A. ;

Vilarinho, P. M. .

PHYSICAL REVIEW LETTERS, 2008, 101 (16)

[6] Broad-band dielectric spectroscopy analysis of relaxational dynamics in Mn-doped SrTiO3 ceramics [J].

Tkach, A ;

Vilarinho, PM ;

Kholkin, AL ;

Pashkin, A ;

Veljko, S ;

Petzelt, J .

PHYSICAL REVIEW B, 2006, 73 (10)

[7] Polar behavior in Mn-doped SrTiO3 ceramics [J].

Tkach, A ;

Vilarinho, PM ;

Kholkin, AL .

APPLIED PHYSICS LETTERS, 2005, 86 (17) :1-3

[8] Ferroelectric tuning of planar and bulk microwave devices [J].

Vendik, OG ;

Hollmann, EK ;

Kozyrev, AB ;

Prudan, AM .

JOURNAL OF SUPERCONDUCTIVITY, 1999, 12 (02) :325-338

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