TY - JOUR

T1 - Strong anisotropic thermal expansion in borates

AU - Bubnova, Rimma S.

AU - Filatov, Stanislav K.

PY - 2008/11/1

Y1 - 2008/11/1

N2 - The paper summarizes results of high-temperature single crystal X-ray diffraction studies for six borate structures and high-temperature powder X-ray diffraction data for about 50 borates. The characteristics on thermal expansion of 50 borates of univalent, bivalent and trivalent metals of different. dimensionality and anion structure are listed. The basic principles of high-temperature borate crystal chemistry emerge from these studies and the regularities of borate thermal behavior are revevealed. On heating the BO 3, and BO4, polyhedra and rigid groups consisting of these polyhedra practically do not change their configuration and size but sometimes rotate like hinges exhibiting greatly anisotropic thermal expansion including linear negative expansion.

AB - The paper summarizes results of high-temperature single crystal X-ray diffraction studies for six borate structures and high-temperature powder X-ray diffraction data for about 50 borates. The characteristics on thermal expansion of 50 borates of univalent, bivalent and trivalent metals of different. dimensionality and anion structure are listed. The basic principles of high-temperature borate crystal chemistry emerge from these studies and the regularities of borate thermal behavior are revevealed. On heating the BO 3, and BO4, polyhedra and rigid groups consisting of these polyhedra practically do not change their configuration and size but sometimes rotate like hinges exhibiting greatly anisotropic thermal expansion including linear negative expansion.

UR - http://www.scopus.com/inward/record.url?scp=55649091705&partnerID=8YFLogxK

U2 - 10.1002/pssb.200880253

DO - 10.1002/pssb.200880253

M3 - Article

AN - SCOPUS:55649091705

VL - 245

SP - 2469

EP - 2476

JO - Physica Status Solidi (B): Basic Research

JF - Physica Status Solidi (B): Basic Research

SN - 0370-1972

IS - 11

ER -