Thermodynamic nature of phase transitions in Pb(ZrxTi1-x)O-3 ceramics near the morphotropic phase boundary .1. Structural studies

被引:55
作者
Mishra, SK [1 ]
Singh, AP [1 ]
Pandey, D [1 ]
机构
[1] SHAHEED BHAGAT SINGH COLL ENGN & TECHNOL,FIROZPUR 152002,INDIA
来源
PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES | 1997年 / 76卷 / 02期
关键词
D O I
10.1080/01418639708241086
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The room-temperature structures of Pb(ZrxTi1-x)O-3 ceramics are shown to be tetragonal for x less than or equal to 0.52 and rhombohedral for x greater than or equal to 0.530 while both the rhombohedral phase (R-phase) and the tetragonal phase (T-phase) coexist at x = 0.525 corresponding to the morphotropic phase boundary (MPB). Ceramics with x = 0.530 and 0.535 undergo the following sequence of phase transitions with increasing temperature R --> R + T --> T --> cubic (C). For x = 0.525, the sequence is R + T --> T --> C while, for x = 0.520, the T-phase directly transforms into C. The T-to-C-phase transitions for all the compositions is shown to be discontinuous. The phase transition sequence for x greater than or equal to 0.525 confirms that the MPB consists of a two-phase region and that it is tilted towards the Zr-rich end.
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页码:213 / 226
页数:14
相关论文
共 29 条
[11]  
ISUPOV VA, 1968, FIZ TVERD TELA+, V10, P989
[12]  
Jaffe B., 1971, PIEZOELECTRIC CERAMI
[13]   SLUGGISH TRANSITION BETWEEN TETRAGONAL AND RHOMBOHEDRAL PHASES OF PB(ZR,TI)O3 PREPARED BY APPLICATION OF ELECTRIC-FIELD [J].
KAKEGAWA, K ;
MOHRI, J ;
SHIRASAKI, S ;
TAKAHASHI, K .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1982, 65 (10) :515-519
[14]   COMPOSITIONAL FLUCTUATION AND PROPERTIES OF PB(ZR,TI)O3 [J].
KAKEGAWA, K ;
MOHRI, J ;
TAKAHASHI, T ;
YAMAMURA, H ;
SHIRASAKI, S .
SOLID STATE COMMUNICATIONS, 1977, 24 (11) :769-772
[15]  
KARL K, 1971, PHYS STATUS SOLIDI A, V8, P87
[16]  
KAY HF, 1949, PHILOS MAG, V40, P1019
[17]  
LAL R, 1988, BRIT CERAM TRANS J, V87, P99
[18]  
LANDAU LD, 1958, STATPHYSICS
[19]   A MODEL FOR THE STRUCTURAL HYSTERESIS IN POLING AND THERMAL DEPOLING OF PZT CERAMICS [J].
LAW, HH ;
ROSSITER, PL ;
SIMON, GP ;
UNSWORTH, J .
JOURNAL OF MATERIALS SCIENCE, 1995, 30 (19) :4901-4905
[20]  
LINES ME, 1977, PRINCIPLES APPLICATI