Lattice dynamics and central-mode phenomena in the dielectric response of ferroelectrics and related materials

被引:109
作者
Buixaderas, E [1 ]
Kamba, S [1 ]
Petzelt, J [1 ]
机构
[1] Acad Sci Czech Republic, Inst Phys, Dept Dielect, Prague 18221 8, Czech Republic
关键词
D O I
10.1080/00150190490508909
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this review we describe and discuss recent results on the linear dielectric response of high-permittivity dielectric crystals and ceramics in the wide frequency range 10(2)-10(14) Hz. Our attention is paid to materials which exhibit some interesting low-frequency polar-phonon anomalies in combination with some additional dielectric dispersion below the polar phonon region. The following compounds are discussed: microwave ceramics Bi1.5Zn1.0Nb1.5O7, antiferroelectric PbZrO3 ceramics and AgNbO3 crystals, ferroelectric LiNaGe4O9, LaBGeO5, Cd2Nb2O7 and SrBi2 Ta2O9 crystals, incommensurate ferroelectric Sr2Nb2O7, Ba2NaNb5O15 and BCCD crystals, dipolar-glass crystal of Rb-1/2(ND4)(1/2)D2PO4, relaxor ferroelectric Pb(Sc1/2Ta1/2)O-3 and PLZT ceramics and PMN crystals, antiferroelectric PUT 2/95/5 ceramics and relaxor-based PMN-PT PZN-PT and BiScO3-PT crystals and ceramics. For these materials the polar phonon spectra are discussed together with their flow-frequency dielectric response and dispersion regions in between, in the 10-300 K or higher temperature range, depending on the existing phase transitions of interest. Some universal features of the disorder and anharmonicities are pointed out: central-mode phenomena near displacive phase transitions and polar nano-clusters which appear at rather high temperatures and remain present down to low temperatures if the material remains structurally disordered. The manifestation of the latter in the dielectric spectra consists in extreme broadening of the relaxation region on cooling which at low temperatures results in constant loss spectra (1/f noise).
引用
收藏
页码:131 / 192
页数:62
相关论文
共 300 条
[31]  
2-X
[32]   Broad-band dielectric spectroscopy of Ba2NaNb5O15 single crystal [J].
Buixaderas, E ;
Porokhonskyy, V ;
Paskhin, A ;
Savinov, M ;
Petzelt, J .
EUROPEAN PHYSICAL JOURNAL B, 2002, 30 (03) :319-329
[33]   Polar phonons and far-infrared amplitudon in Sr2Nb2O7 [J].
Buixaderas, E ;
Kamba, S ;
Petzelt, J .
JOURNAL OF PHYSICS-CONDENSED MATTER, 2001, 13 (12) :2823-2834
[34]   Phase transitions sequence in pyrochlore Cd2Nb2O7 studied by IR reflectivity [J].
Buixaderas, E ;
Kamba, S ;
Petzelt, J ;
Savinov, M ;
Kolpakova, NN .
EUROPEAN PHYSICAL JOURNAL B, 2001, 19 (01) :9-16
[35]  
Buixaderas E, 2000, FERROELECTRICS, V239, P887, DOI 10.1080/00150190008213300
[36]   GLASSY POLARIZATION BEHAVIOR IN FERROELECTRIC COMPOUNDS PB(MG1/3NB2/3)O3 AND PB(ZN1/3NB2/3)O3 [J].
BURNS, G ;
DACOL, FH .
SOLID STATE COMMUNICATIONS, 1983, 48 (10) :853-856
[37]   CRYSTALLINE FERROELECTRICS WITH GLASSY POLARIZATION BEHAVIOR [J].
BURNS, G ;
DACOL, FH .
PHYSICAL REVIEW B, 1983, 28 (05) :2527-2530
[38]   Dielectric studies of ferroelectric phase transition in LNG crystal [J].
Cach, R ;
Cebula, I ;
Volnyanskii, MD .
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2002, 90 (1-2) :72-78
[39]   1/f noise and dynamical heterogeneity in glasses [J].
Careri, G. ;
Consolini, G. ;
Kutnjak, Z. ;
Filipič, C. ;
Levstik, A. .
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 2001, 64 (5 I) :1-052901
[40]   ORDERING STRUCTURE AND DIELECTRIC-PROPERTIES OF UNDOPED AND LA/NA-DOPED PB(MG1/3NB2/3)O3 [J].
CHEN, J ;
CHAN, HM ;
HARMER, MP .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1989, 72 (04) :593-598