Multiferroic perovskite (Pb0.845Sm0.08Fe0.035)(Ti0.98Mn0.02)O3 with ferroelectric and weak ferromagnetic properties

被引：13

作者：

Craciun, F. ^{[1
]}

Dimitriu, E. ^{[2
]}

Grigoras, M. ^{[3
]}

Lupu, N. ^{[3
]}

机构：

[1] CNR, ISC, Area Ric Roma Tor Vergata, I-00133 Rome, Italy

[2] REGO COM Srl, Bucharest 050716 5, Romania

[3] Natl Inst Res & Dev Tech Phys, Iasi 700050, Romania

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 24期

关键词：

Ferroelectric materials - Ferromagnetism - Iron compounds - Magnetization - Ferroelectricity - Temperature distribution - Lead titanate - Perovskite - Permittivity - Samarium compounds;

D O I：

10.1063/1.4811258

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated the multiferroic properties of PbTiO3 substituted on the A-site with Sm3+ and Fe2+ magnetic ions. We show that the ceramic material with composition (Pb0.845Sm0.08 Fe-0.035)(Ti0.98Mn0.02)O-3 has a spontaneous ferroelectric polarization of about 14 mu C/cm(2) and weak ferromagnetism (remanent magnetization similar to 2.3 emu/g) which persists even at room temperature. The dielectric constant is 190, tan delta similar to 0.005, and the piezoelectric g(33) constant is 25mV x m/N. Temperature dependence of dielectric permittivity shows a strong anomaly at 662 K, at the paraelectric-ferroelectric transition, and a broader anomaly below 140K where magnetization also increases, probably due to magnetoelectric coupling between ferroelectric and magnetic states. (C) 2013 AIP Publishing LLC.

引用

页数：5

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