Published February 2004 | Version v1
Journal article Metadata-only

Ferroelectric and nonlinear optical properties of Ca9-xZnxBi(VO4)7 vanadates

Creators

  • 1. Moskovskij Gosudarstvennyj Univ. im. M.V. Lomonosova, Fakul'tet Nauk o Materialakh, Moscow (Russian Federation)
  • 2. Moskovskij Gosudarstvennyj Univ. im. M.V. Lomonosova, Khimicheskij Fakul'tet, Moscow (Russian Federation)

Description

Solid solutions Ca9-xZnxBi(VO4)7 (0≤x≤1), featuring according to X-ray phase analysis the whitlockite-type polar structure, were prepared by means of solid-phase synthesis. Their structural data, refined by the Rietveld analysis, i.e. a=10.8568 (1), c=37.924(1) A at x=0.5 and a=10.8451(1), c=37.867(1) at x=1.0; space group R3c, Z=6, suggest restricted character of the solid solutions existence in a narrow range 0≤x≤1 in case of isovalent zinc substitution for calcium. In the range of temperatures 290-1200 K the nonlinear optical activity and dielectric properties of the solid solutions discussed were studied

Abstract (Russian)

Методом твердофазного синтеза получены твердые растворы Ca9-xZnxBi(VO4)7 (0≤x≤1), обладающие по данным рентгенофазового анализа полярной структурой типа витлокита. Уточненные методом Ритвельда структурные данные (a=10.8568 (1), c=37.924(1) A при x=0.5 и a=10.8451(1), c=37.867(1) при x=1.0; пр. гр. R3c, Z=6) указывают на ограниченность существования области твердых растворов в узком интервале 0≤x≤1 при изовалентном замещении кальция на цинк. В интервале температур 290-1200 К изучены нелинейно-оптическаяактивность и диэлектрические свойства указанных соединений

Additional details

Additional titles

Original title (Russian)
Сегнетоэлектрические и нелинейно-оптические свойства ванадатов Cа

Publishing Information

Journal Title
Zhurnal Neorganicheskoj Khimii
Journal Volume
49
Journal Issue
2
Journal Page Range
p. 165-173
ISSN
0044-457X
CODEN
ZNOKAQ

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
36084552
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
BISMUTH COMPOUNDS; CALCIUM COMPOUNDS; CHEMICAL COMPOSITION; CHEMICAL PREPARATION; CRYSTAL LATTICES; DIELECTRIC PROPERTIES; LATTICE PARAMETERS; OPTICAL PROPERTIES; PHASE TRANSFORMATIONS; SOLID SOLUTIONS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 0400-1000 K; TEMPERATURE RANGE 1000-4000 K; TRANSITION TEMPERATURE; VANADATES; ZINC COMPOUNDS
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CRYSTAL STRUCTURE; DISPERSIONS; ELECTRICAL PROPERTIES; HOMOGENEOUS MIXTURES; MIXTURES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SOLUTIONS; SYNTHESIS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; VANADIUM COMPOUNDS

Optional Information

Notes
23 refs., 7 figs., 5 tabs.