Multiferroic (Nd,Fe)-doped PbTiO3 ceramics with coexistent ferroelectricity and magnetism at room temperature

被引：18
|
作者：
Craciun, F. [1 ]
Cordero, F. [1 ]
Cernea, M. [2 ]
Fruth, V. [3 ]
Atkinson, I. [3 ]
Stanica, N. [3 ]
Vasile, B. S. [4 ]
Trusca, R. [4 ]
Iuga, A. [2 ]
Galizia, P. [5 ]
Galassi, C. [5 ]
机构：
[1] CNR, ISM, Area Ric Roma Tor Vergata, Via Fosso Cavaliere 100, I-00133 Rome, Italy
[2] Natl Inst Mat Phys, Atomistilor 405A, Bucharest 077125, Romania
[3] Romanian Acad, Inst Phys Chem, Spl Independentei 202, Bucharest 060021, Romania
[4] Univ Politehn Bucuresti, Fac Appl Chem & Mat Sci, 1-7 Gh Polizu St, Bucharest 011061, Romania
[5] CNR, ISTEC, Ist Sci & Tecnol Mat Ceramici, Via Granarolo 64, I-48018 Faenza, Italy
来源：
CERAMICS INTERNATIONAL | 2019年 / 45卷 / 07期
关键词：
Multiferroics; Dielectric properties; Ferroelectric properties; Magnetic properties; Perovskite ceramics; Phase separation;
D O I：
10.1016/j.ceramint.2018.08.147
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We report the structural, dielectric, elastic, ferroelectric and ferromagnetic properties of multiferroic (Nd, Fe)doped PbTiO3 perovskite ceramics with composition (Pb-0.88 Nd-0.08 )(Ti-0.94 Fe-0 .04 Mn-0.02)O-3, prepared by different solid state reaction methods: the first one based on a single-stage calcination (Method I) and the second based on a double-stage calcination (Method II). Structural, dielectric and anelastic measurements evidenced a double phase transition for samples prepared by Method I, which has been attributed to phase separation. This phase separation has been confirmed also by TEM and HRTEM investigations. Samples prepared by Method II showed a single phase transition from paraelectric to ferroelectric phase. We found coexistent ferroelectric and ferromagnetic properties, also at room-temperature, but only for ceramics prepared by Method II. The crucial role of calcination process for avoiding phase separation and obtaining homogeneous structures with ferroelectric and ferromagnetic order is underlined.
引用
收藏
页码：9390 / 9396
页数：7
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