Published May 2015 | Version v1
Journal article Metadata-only

Growth and characterization of acentric BaHf(BO3)2 and BaZr(BO3)2

Creators

  • 1. Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2 (Poland)
  • 2. Institute of Applied Physics, Military University of Technology, 2 Kaliskiego Str., 00-908 Warszawa (Poland)

Description

Growth, single crystal X-ray diffraction, polarized Raman and infrared (IR) studies of BaHf(BO3)2 are presented. Raman and IR spectra of polycrystalline BaZr(BO3)2 are also reported to facilitate assignment of modes. BaHf(BO3)2 borate crystallizes in trigonal system, space group R3c, with lattice parameters: a=5.1540(4) Å, c=33.901(3) Å. It accommodates dolomite-like structure doubled in the c direction, which is built of alternating layers of HfO6 octahedra and BaO6 distorted trigonal prisms that are connected through borate groups. The obtained structural as well as spectroscopic data show that BaHf(BO3)2 is isostructural with BaZr(BO3)2 and the deviations from centrosymmetry is small. - Graphical abstract: Arrangement of BO3 groups in BaHf(BO3)2 along the c direction in one unit cell. Dark and light blue denote different borate groups. - Highlights: • BaHf(BO3)2 single crystals were grown. • X-ray diffraction showed that this borate crystallizes in the acentric R3c structure. • Raman and IR spectra were measured for BaHf(BO3)2 and BaZr(BO3)2, respectively. • Assignment of modes is proposed

Availability note (English)

Available from http://dx.doi.org/10.1016/j.jssc.2015.01.008

Additional details

Identifiers

DOI
10.1016/j.jssc.2015.01.008;
PII
S0022-4596(15)00009-2;

Publishing Information

Journal Title
Journal of Solid State Chemistry
Journal Volume
225
Journal Page Range
p. 330-334
ISSN
0022-4596
CODEN
JSSCBI

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
47045427
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
BARIUM OXIDES; BORATES; DOLOMITE; HAFNIUM COMPOUNDS; INFRARED SPECTRA; LATTICE PARAMETERS; LAYERS; MONOCRYSTALS; POLYCRYSTALS; RAMAN SPECTROSCOPY; TRIGONAL LATTICES; X-RAY DIFFRACTION; ZIRCONIUM COMPOUNDS
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; BORON COMPOUNDS; CARBONATE MINERALS; CHALCOGENIDES; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CRYSTALS; DIFFRACTION; LASER SPECTROSCOPY; MINERALS; OXIDES; OXYGEN COMPOUNDS; REFRACTORY METAL COMPOUNDS; SCATTERING; SPECTRA; SPECTROSCOPY; THREE-DIMENSIONAL LATTICES; TRANSITION ELEMENT COMPOUNDS

Optional Information

Copyright
Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.