Smearing of the reconstructive phase transition in pure and mixed LiK1-xRbxSO4 crystals

被引：11

作者：

Righi, A ^{[1
]}

Bourson, P ^{[1
]}

Pimenta, MA ^{[1
]}

Moreira, RL ^{[1
]}

机构：

[1] UNIV METZ, LAB MOPS, SUPELEC, CLOES, F-57078 METZ 3, FRANCE

来源：

PHYSICAL REVIEW B | 1997年 / 56卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.56.10722

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The smearing of the reconstructive phase transition in LiK1-xRbxSO4 crystals (x less than or equal to 0.50), due to the occurrence of different nonuniform local phase transitions, is demonstrated from the temperature dependence of the electrical-conductivity data around the critical region. A model which determines the distribution of critical temperatures is presented and the results are compared with the calorimetric behavior of the system. For the pure compound LiKSO4, the distribution of critical temperatures is fitted by a Gaussian curve, showing that the smearing of the phase transition is uniquely due to its reconstructive character. The multimodal distribution observed for the mixed compounds suggests the appearance of clusters with different concentrations. [S0163-1829(97)08541-X].

引用

页码：10722 / 10725

页数：4

共 18 条

[1] AN ELECTRON-PARAMAGNETIC-RES STUDY OF A NEW LOW-TEMPERATURE PHASE-TRANSITION IN KLISO4-MOO43-
BILL, H
SEKHAR, YR
LOVY, D
[J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1988, 21 (15): : 2795 - 2804
[2] The crystal structure of lithium potassium sulphate
Bradley, AJ
[J]. PHILOSOPHICAL MAGAZINE, 1925, 49 (294): : 1225 - 1237
[3] DIELECTRIC MEASUREMENTS AND DOMAIN-STRUCTURE IN LIKSO4 AT LOW-TEMPERATURES
CACH, R
TOMASZEWSKI, PE
BORNAREL, J
[J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1985, 18 (04): : 915 - 923
[4] PHONON DENSITY OF STATES, FREE-ENERGY, AND ANHARMONICITY OF LIKSO4
CHOUDHURY, N
CHAPLOT, SL
RAO, KR
[J]. PHYSICAL REVIEW B, 1986, 33 (12): : 8607 - 8614
[5] CHUNG SJ, 1972, ACTA CRYSTALLOGR A, V28, pS57
[6] NONANALYTIC BEHAVIOR ABOVE CRITICAL POINT IN A RANDOM ISING FERROMAGNET
GRIFFITHS, RB
[J]. PHYSICAL REVIEW LETTERS, 1969, 23 (01) : 17 - +
[7] KINGERY WD, 1976, INTRO CERAMICS, P720
[8] LI YY, 1984, SOLID STATE COMMUN, V51, P355, DOI 10.1016/0038-1098(84)90112-1
[9] LINES ME, 1977, PRINCIPLES APPLICATI
[10] RAMAN AND BIREFRINGENCE STUDIES OF THE LOW-TEMPERATURE PHASE-TRANSITIONS IN LIK1-XRBXSO4 CRYSTALS
MOREIRA, RL
BOURSON, P
LEITAO, UA
RIGHI, A
BELO, LCM
PIMENTA, MA
[J]. PHYSICAL REVIEW B, 1995, 52 (17) : 12591 - 12600

← 1 2 →