Effect of chemical substitution on the Neacuteel temperature of multiferroic Bi1-xCaxFeO3

被引：115

作者：

Catalan, Gustau ^{[1
]}

Sardar, Kripasindhu ^{[2
]}

Church, Nathan S. ^{[1
]}

Scott, James F. ^{[1
]}

Harrison, Richard J. ^{[1
]}

Redfern, Simon A. T. ^{[1
]}

机构：

[1] Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England

[2] Univ Warwick, Dept Chem, Coventry CV4 7AL, W Midlands, England

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 21期

关键词：

bismuth compounds; calcium compounds; doping profiles; electrical conductivity; ferroelectric ceramics; ferroelectric transitions; magnetoelectric effects; multiferroics; Neel temperature; SOLID-SOLUTIONS; SUPEREXCHANGE INTERACTION; CRYSTAL-STRUCTURE; BISMUTH FERRITE; HIGH-PRESSURE; RARE-EARTH; TRANSITION; CERAMICS; CAFEO3; DIFFRACTION;

D O I：

10.1103/PhysRevB.79.212415

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Multiferroic BiFeO3 ceramics have been doped with Ca and it is found that the magnetic Neel temperature (T-Neacuteel) increases as Ca concentration increases, at a rate of 0.66 K per 1% Ca (molar). The smaller ionic size of Ca compared with Bi results in a contraction of the lattice, suggesting that Ca doping can be regarded as a proxy for hydrostatic pressure, with an equivalence of 1% Ca=0.3 GPa. Combining these results, we argue that hydrostatic pressure should increase the magnetic transition temperature of BiFeO3 at a rate around partial derivative T-N/partial derivative P similar to 2.2 K/GPa. Our results also suggest that pressure (chemical or hydrostatic) may be used to bring the ferroelectric critical temperature T-c and the magnetic T-Neacuteel closer together, thereby enhancing magnetoelectric coupling, provided that electrical conductivity can be kept sufficiently low.

引用

页数：4

共 42 条

[1] Ferroelectric-Paraelectric Transition in BiFeO3: Crystal Structure of the Orthorhombic β Phase [J].

Arnold, Donna C. ;

Knight, Kevin S. ;

Morrison, Finlay D. ;

Lightfoot, Philip .

PHYSICAL REVIEW LETTERS, 2009, 102 (02)

[2] STRUCTURE DU FERRITE BICALCIQUE ET DE LA BROWNMILLERITE [J].

BERTAUT, EF ;

BLUM, P ;

SAGNIERES, A .

ACTA CRYSTALLOGRAPHICA, 1959, 12 (02) :149-159

[3] Crystal structure of solid solutions REFe1-x(Al or Ga)xO3 (RE = Tb, Er, Tm) and the correlation between superexchange interaction Fe+3-O-2-Fe+3 linkage angles and Neel temperature [J].

Bombik, A ;

Lesniewska, B ;

Mayer, J ;

Pacyna, AW .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2003, 257 (2-3) :206-219

[4] Acceptor doped BiFeO3 ceramics:: A new material for oxygen permeation membranes [J].

Brinkman, Kyle ;

Iijima, Takashi ;

Takamura, Hitoshi .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 2007, 46 (4-7) :L93-L96

[5] Physics and Applications of Bismuth Ferrite [J].

Catalan, Gustau ;

Scott, James F. .

ADVANCED MATERIALS, 2009, 21 (24) :2463-2485

[6] X-ray diffraction analysis and specific heat capacity of (Bi1-xLax)FeO3 perovskites [J].

Chen, J. R. ;

Wang, W. L. ;

Li, J. -B. ;

Rao, G. H. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 459 (1-2) :66-70

[7] 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

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

Ederer, C ;

Spaldin, NA .

PHYSICAL REVIEW B, 2005, 71 (06)

[9] Combinatorial discovery of a lead-free morphotropic phase boundary in a thin-film piezoelectric perovskite [J].

Fujino, S. ;

Murakami, M. ;

Anbusathaiah, V. ;

Lim, S. -H. ;

Nagarajan, V. ;

Fennie, C. J. ;

Wuttig, M. ;

Salamanca-Riba, L. ;

Takeuchi, I. .

APPLIED PHYSICS LETTERS, 2008, 92 (20)

[10] BI1-XRXFEO3 (R = RARE-EARTH) - A FAMILY OF NOVEL MAGNETOELECTRICS [J].

GABBASOVA, ZV ;

KUZMIN, MD ;

ZVEZDIN, AK ;

DUBENKO, IS ;

MURASHOV, VA ;

RAKOV, DN ;

KRYNETSKY, IB .

PHYSICS LETTERS A, 1991, 158 (09) :491-498

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