PHASE-TRANSITIONS AND I-127,CS-133 QUADRUPOLE COUPLINGS IN POLYCRYSTALLINE CESIUM METAPERIODATE

被引：7

作者：

TARASOV, VP ^{[1
]}

KIRAKOSIAN, GA ^{[1
]}

BUSLAEV, YA ^{[1
]}

EICHHOFF, U ^{[1
]}

机构：

[1] BRUKER ANALYT MESSTECH GMBH, W-7512 RHEINSTETTEN 4, GERMANY

来源：

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1990年 / 79卷 / 01期

关键词：

D O I：

10.1007/BF01387830

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The127I and133Cs NMR spectra of polycrystalline CsIO4, a material of potential interest for transformation of laser irradiation, have been measured in the temperature range 170-440 K and the line shape has been analyzed taking into account first and second order quadrupole interactions and chemical shift anisotropy. Quadrupole coupling constants and asymmetry parameters have been determined as a function of temperature.127I and133Cs data consistently show two phase transitions in the ranges 243-300 K and 420-440 K with a temperature hysteresis for the first transition and a range for coexistence of two phases. The time evolution of the NMR signal suggests the existence of piezomagnetism, which was believed to exist only in crystals with a magnetic structure. © 1990 Springer-Verlag.

引用

页码：101 / 104

页数：4

共 11 条

[1] FERROELASTIC PHASE-TRANSITION IN CSIO4 [J].

ALDHAHIR, TA ;

RAGHURAMA, G ;

BHAT, HL .

PHASE TRANSITIONS, 1988, 12 (03) :205-214

[2]

ALDHAHIR TA, 1988, INDIAN J PURE AP PHY, V26, P239

[3]

BEINTEMA J, 1937, Z KRISTALLOGR, V13, P300

[4] TEMPERATURE-DEPENDENCE OF I-127 NUCLEAR-QUADRUPOLE COUPLING IN SCHEELITE-STRUCTURED AND OTHER PERIODATES [J].

BURKERT, PK .

JOURNAL OF MOLECULAR STRUCTURE, 1982, 83 (1-4) :307-310

[5] IODINE COORDINATION POLYHEDRON IN HYDRATED SODIUM PERIODATE DETERMINED FROM SECOND-HARMONIC GENERATION [J].

CRANE, GR ;

BERGMAN, JG .

INORGANIC CHEMISTRY, 1978, 17 (06) :1613-1617

[6]

GOLUBEVA NG, 1984, UKR FIZ ZH+, V29, P679

[7]

PLYUSHCHEV VE, 1970, KHIM TEKHNOL, P143

[8]

TARASOV VP, 1987, DOKL AKAD NAUK SSSR+, V293, P1423

[9]

TARASOV VP, 1989, 3 VSES K SPEKTR YAMR, P47

[10] NMR DISPERSIVE MODE RESONANCE OF MN-55 IN POLYCRYSTALLINE KMNO4 [J].

WADSWORTH, M ;

FRANCE, PW .

JOURNAL OF MAGNETIC RESONANCE, 1983, 51 (03) :424-429

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