Phase-transition temperature and character of Cd2Nb2O7 -: art. no. 134103

被引:8
作者
Ang, C [1 ]
Yu, Z
机构
[1] Univ Akron, Dept Phys, Akron, OH 44325 USA
[2] Univ Akron, Dept Chem, Akron, OH 44325 USA
关键词
D O I
10.1103/PhysRevB.70.134103
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The complicated dielectric spectrum of Cd2Nb2O7 around the "paraelectric-ferroelectric" (PF) phase transition is greatly simplified due to the suppression of the multiple dielectric relaxation processes under a dc electric field. The PF transition is revealed under a dc electric field and characterized by the Curie-Weiss relation. The results show that the PF phase transition is of second order. The dc electric field influence on the dielectric relaxation modes and PF phase transition for both single crystals and ceramics is discussed.
引用
收藏
页码:134103 / 1
页数:4
相关论文
共 29 条
[1]   Dielectric relaxation processes in Cd2Nb2O7 compound [J].
Ang, C ;
Guo, RY ;
Bhalla, AS ;
Cross, LE .
JOURNAL OF APPLIED PHYSICS, 2000, 87 (10) :7452-7456
[2]   Effect of dc bias on dielectric properties of Cd2Nb2O7 ceramics [J].
Ang, C ;
Bhalla, AS ;
Guo, RY ;
Cross, LE .
JOURNAL OF APPLIED PHYSICS, 2001, 90 (05) :2465-2468
[3]   Cluster polarization of Cd2Nb2O7 compound [J].
Ang, C ;
Cross, LE ;
Guo, R ;
Bhalla, AS .
APPLIED PHYSICS LETTERS, 2000, 77 (05) :732-734
[4]  
Bryknar Z, 2002, FERROELECTRICS, V272, P2355, DOI 10.1080/00150190211546
[5]   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
[6]   TRICRITICAL POINT IN BATIO3 [J].
CLARKE, R ;
BENGUIGUI, L .
JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1977, 10 (11) :1963-1973
[7]   FERROELECTRICITY IN OXIDES OF FLUORITE STRUCTURE [J].
COOK, WR ;
JAFFE, H .
PHYSICAL REVIEW, 1952, 88 (06) :1426-1426
[8]  
Griffiths R. B., 1970, Physical Review Letters, V24, P715, DOI 10.1103/PhysRevLett.24.715
[9]   UNUSUAL FERROELECTRIC PROPERTIES OF CADMIUM PYRONIOBATE [J].
ISUPOV, VA ;
GOLOVSHC.GI ;
MYLNIKOV.IE .
FERROELECTRICS, 1974, 8 (1-2) :507-509
[10]   DIELECTRIC, X-RAY, AND OPTICAL STUDY OF FERROELECTRIC CD2NB2O7 AND RELATED COMPOUNDS [J].
JONA, F ;
SHIRANE, G ;
PEPINSKY, R .
PHYSICAL REVIEW, 1955, 98 (04) :903-909