Field-Induced Phase Transitions in Relaxor Ferroelectrics

被引：1

作者：

Schmidt, V. Hugo ^{[1
]}

Chien, R. R. ^{[1
]}

Tu, Chi-Shun ^{[2
,3
]}

机构：

[1] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA

[2] Fu Jen Catholic Univ, Grad Inst Appl Sci & Engn, Taipei 242, Taiwan

[3] Fu Jen Catholic Univ, Dept Phys, Taipei 242, Taiwan

来源：

FERROELECTRICS | 2010年 / 400卷

关键词：

Relaxor ferroelectric; phase transitions; polarization; PIEZOELECTRIC PROPERTIES; CRYSTALS;

D O I：

10.1080/00150193.2010.505879

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Landau free energy expansion as a function of three-dimensional polarization for perovskite relaxor ferroelectrics is examined to find effects of large electric fields in causing transitions from one ferroelectric state to another. Our examination of field-induced effects includes a fourth order expansion to obtain the Landau parameters for the observed temperature-and field-induced rhombohedral (R) -> tetragonal (T) transitions in an (001)-cut 0.70Pb(Mg(1/3)Mn(2/3))O(3)-0.30PbTiO(3) (PMN-30%PT) crystal. These parameters enabled us to predict the appearance of an orthorhombic (O) phase in (110)-cut PMN-30% PT crystals under an applied field. These results show that also for field-induced effects, the Landau expansion shows qualitative agreement with experiment for relaxor ferroelectrics.

引用

页码：402 / 409

页数：8

共 7 条

[1]

DEVONSHIRE AF, 1949, PHILOS MAG, V40, P1040

[2] Composition and orientation dependence of dielectric and piezoelectric properties in poled Pb(Mg1/3Nb2/3)O3-PbTiO3 crystals [J].

Feng, Zuyong ;

Zhao, Xiangyong ;

Luo, Haosu .

JOURNAL OF APPLIED PHYSICS, 2006, 100 (02)

[3] Phase transitional behavior and piezoelectric properties of the orthorhombic phase of Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystals [J].

Lu, Y ;

Jeong, DY ;

Cheng, ZY ;

Zhang, QM ;

Luo, HS ;

Yin, ZW ;

Viehland, D .

APPLIED PHYSICS LETTERS, 2001, 78 (20) :3109-3111

[4] Field-induced intermediate orthorhombic phase in (110)-cut Pb(Mg1/3Nb2/3)0.70Ti0.30O3 single crystal [J].

Tu, C. -S. ;

Schmidt, V. H. ;

Chien, R. R. ;

Tsai, S. -H. ;

Lee, S. -C. ;

Luo, H. .

JOURNAL OF APPLIED PHYSICS, 2008, 104 (09)

[5] Nanotwins and phases in high-strain Pb(Mg1/3Nb2/3)1-xTixO3 crystal [J].

Tu, C. -S. ;

Hsieh, C. -M. ;

Chien, R. R. ;

Schmidt, V. H. ;

Wang, F. -T. ;

Chang, W. S. .

JOURNAL OF APPLIED PHYSICS, 2008, 103 (07)

[6] Monoclinic and triclinic phases in higher-order Devonshire theory [J].

Vanderbilt, D ;

Cohen, MH .

PHYSICAL REVIEW B, 2001, 63 (09)

[7] Anhysteretic field-induced rhombhohedral to orthorhombic transformation in ⟨110⟩-oriented 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 crystals [J].

Viehland, D ;

Li, JF .

JOURNAL OF APPLIED PHYSICS, 2002, 92 (12) :7690-7692

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