Ferroic states in La doped BiFeO3-PbTiO3 multiferroic compounds

被引：50

作者：

Cotica, L. F. ^{[1
]}

Estrada, F. R. ^{[1
]}

Freitas, V. F. ^{[1
]}

Dias, G. S. ^{[1
]}

Santos, I. A. ^{[1
]}

Eiras, J. A. ^{[2
]}

Garcia, D. ^{[2
]}

机构：

[1] Univ Estadual Maringa, Dept Fis, BR-87020900 Maringa, Parana, Brazil

[2] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP, Brazil

来源：

JOURNAL OF APPLIED PHYSICS | 2012年 / 111卷 / 11期

关键词：

MAGNETIC-PROPERTIES; DISTORTION; BIFEO3;

D O I：

10.1063/1.4729288

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this paper, the relationship between ferroic states and the physicochemical mechanism which governs the (Bi/Pb/La)-O bonds in polycrystalline La doped (0.6) BiFeO3-(0.4) PbTiO3 compounds were investigated. An abrupt change in the symmetries of perovskite-structured samples, from tetragonal (P4mm) to rhombohedral (R3c), occurs with the increase of the La concentration, highlighting the diminishment of the hybridization of the (Bi/Pb)-O bonds when La is added into the solid solution, and the emergence of a characteristic morphotropic phase boundary tuned by doping. A maximum remnant polarization (10 mu C/cm(2)) was observed for low La concentrations (where R3c and P4mm phases coexist), while the maximum remnant magnetization (similar to 75 x 10(-3) emu/g) was observed for highly La concentrated samples. These results show that ferroelectric and weak-ferromagnetic orders are strongly correlated to the structural arrangement, which in turn are directly related to the chemical A-O and B-O bonds (long-range and short-range forces) and with the chemical characteristics of the elements that fulfills the A site of the perovskite structure. (C) 2012 American Institute of Physics. [http://dx. doi. org/10.1063/1.4729288]

引用

页数：5

共 25 条

[1] Evidence for Room-Temperature Multiferroicity in a Compound with a Giant Axial Ratio [J].

Bea, H. ;

Dupe, B. ;

Fusil, S. ;

Mattana, R. ;

Jacquet, E. ;

Warot-Fonrose, B. ;

Wilhelm, F. ;

Rogalev, A. ;

Petit, S. ;

Cros, V. ;

Anane, A. ;

Petroff, F. ;

Bouzehouane, K. ;

Geneste, G. ;

Dkhil, B. ;

Lisenkov, S. ;

Ponomareva, I. ;

Bellaiche, L. ;

Bibes, M. ;

Barthelemy, A. .

PHYSICAL REVIEW LETTERS, 2009, 102 (21)

[2] Structure and negative thermal expansion in the PbTiO3-BiFeO3 system [J].

Chen, J. ;

Xing, X. R. ;

Liu, G. R. ;

Li, J. H. ;

Liu, Y. T. .

APPLIED PHYSICS LETTERS, 2006, 89 (10)

[3] Dielectric and magnetic enhancements in BiFeO3-PbTiO3 solid solutions with La doping [J].

Cheng, Jinrong ;

Yu, Shengwen ;

Chen, Jianguo ;

Meng, Zhongyan ;

Cross, L. Eric .

APPLIED PHYSICS LETTERS, 2006, 89 (12)

[4] Effects of La substituent on ferroelectric rhombohedral/tetragonal morphotropic phase boundary in (1-x)(Bi,La)(Ga0.05Fe0.95)O3-xPbTiO3 piezoelectric ceramics [J].

Cheng, JR ;

Cross, LE .

JOURNAL OF APPLIED PHYSICS, 2003, 94 (08) :5188-5192

[5] ORIGIN OF FERROELECTRICITY IN PEROVSKITE OXIDES [J].

COHEN, RE .

NATURE, 1992, 358 (6382) :136-138

[6] A THERMODYNAMIC THEORY OF WEAK FERROMAGNETISM OF ANTIFERROMAGNETICS [J].

DZYALOSHINSKY, I .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1958, 4 (04) :241-255

[7] Weak ferromagnetism and magnetoelectric coupling in bismuth ferrite [J].

Ederer, C ;

Spaldin, NA .

PHYSICAL REVIEW B, 2005, 71 (06)

[8] Multiferroic and magnetoelectric materials [J].

Eerenstein, W. ;

Mathur, N. D. ;

Scott, J. F. .

NATURE, 2006, 442 (7104) :759-765

[9]

FEDULOV SA, 1964, SOV PHYS-SOL STATE, V6, P375

[10] Structural, microstructural and magnetic investigations in high-energy ball milled BiFeO3 and Bi0.95Eu0.05FeO3 powders [J].

Freitas, V. F. ;

Grande, H. L. C. ;

de Medeiros, S. N. ;

Santos, I. A. ;

Cotica, L. F. ;

Coelho, A. A. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 461 (1-2) :48-52

← 1 2 3 →