Optical phonon features in ferroelectric Bi3Fe1/2Nb3/2O9

被引：4

作者：

Nonato, A. ^{[1
]}

Paschoal, C. W. A. ^{[1
]}

Silva, E. N. ^{[1
]}

Ayala, A. P. ^{[2
]}

Moreira, R. L. ^{[3
]}

Lufaso, M. W. ^{[4
]}

机构：

[1] Univ Fed Maranhao, Dept Fis, BR-65085580 Sao Luis, MA, Brazil

[2] Univ Fed Ceara, Dept Fis, BR-60455970 Fortaleza, CE, Brazil

[3] Univ Fed Minas Gerais, ICEX, Dept Fis, BR-30123970 Belo Horizonte, MG, Brazil

[4] Univ N Florida, Dept Chem, Jacksonville, FL 32224 USA

来源：

VIBRATIONAL SPECTROSCOPY | 2012年 / 63卷

关键词：

Aurivillius; Bi(3)Fel(1/2)Nb(3/2)O(9); Raman; Infrared; Lattice dynamics; Ferroelectric; BILBAO CRYSTALLOGRAPHIC SERVER; TETRAGONAL PHASE-TRANSITION; CATION DISORDER; MAGNETOELECTRIC MEASUREMENTS; DIELECTRIC-PROPERTIES; LATTICE-VIBRATIONS; AURIVILLIUS PHASES; RAMAN-SCATTERING; THIN-FILMS; SR;

D O I：

10.1016/j.vibspec.2012.09.013

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We have investigated the Raman scattering and infrared active optical phonons in Bi3Fe1/2Nb3/2O9. At room temperature the phonons were assigned according to lattice dynamic calculations performed using the Wilson's FG method. The infrared phonon parameters allowed us to calculate the real part of the dielectric permittivity and losses in the far infrared region, and also to estimate the quality factor (Q) of the material in the microwave region. The Raman-active phonons were investigated at high temperatures and the ferroelectric phase transition underwent by this compound was observed. The change in temperature-dependent Raman spectra suggests that the high temperature crystal structure belongs to the 14/mmm(D-4h(17)) space group. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：409 / 417

页数：9

共 52 条

[1] Lattice dynamics study of high-quality strontium bismuth tantalate single crystals [J].

Almeida, A ;

Chaves, MR ;

Amorin, H ;

Costa, MEV ;

Kholkin, AL .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2005, 17 (48) :7605-7612

[2] The orthorhombic to tetragonal phase transition in Bi1.75Te0.25SrNb1.75Hf0.25O9 [J].

Alonso, RE ;

Ayala, AP ;

Castro, A ;

Silva, JJL ;

López-García, A ;

Paschoal, AR .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2004, 16 (23) :4139-4148

[3]

Aroyo MI, 2011, BULG CHEM COMMUN, V43, P183

[4] Bilbao crystallographic server. II. Representations of crystallographic point groups and space groups [J].

Aroyo, MI ;

Kirov, A ;

Capillas, C ;

Perez-Mato, JM ;

Wondratschek, H .

ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 2006, 62 :115-128

[5] Bilbao crystallographic server: I. Databases and crystallographic computing programs [J].

Aroyo, MI ;

Perez-Mato, JM ;

Capillas, C ;

Kroumova, E ;

Ivantchev, S ;

Madariaga, G ;

Kirov, A ;

Wondratschek, H .

ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 2006, 221 (01) :15-27

[6] Cation disorder in ferroelectric Aurivillius phases of the type Bi(2)ANb(2)O(9) (A=Ba, Sr, Ca) [J].

Blake, SM ;

Falconer, MJ ;

McCreedy, M ;

Lightfoot, P .

JOURNAL OF MATERIALS CHEMISTRY, 1997, 7 (08) :1609-1613

[7] Comparison of the electrical characteristics of PZT and SBT thin films [J].

Das, RR ;

Majumder, SB ;

Katiyar, RS .

INTEGRATED FERROELECTRICS, 2002, 42 :323-334

[8] FATIGUE-FREE FERROELECTRIC CAPACITORS WITH PLATINUM-ELECTRODES [J].

DEARAUJO, CAP ;

CUCHIARO, JD ;

MCMILLAN, LD ;

SCOTT, MC ;

SCOTT, JF .

NATURE, 1995, 374 (6523) :627-629

[9]

Dowty E., 1987, PHYS CHEM MINER, V14, P67

[10] Magnetoelectricity via crystallography [J].

Fuentes, L ;

García, M ;

Matutes-Aquino, J ;

Ríos-Jara, D .

JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 369 (1-2) :10-13

← 1 2 3 4 5 6 →