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Lattice‐parameter measurements of PbHPO 4 single crystals by the ratio method
Author(s) -
Horváth J.
Publication year - 1983
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889883011188
Subject(s) - monoclinic crystal system , lattice constant , lattice (music) , materials science , ferroelectricity , crystal structure , single crystal , atmospheric temperature range , phase transition , crystal system , condensed matter physics , crystallography , chemistry , thermodynamics , diffraction , physics , optics , dielectric , optoelectronics , acoustics
Temperature dependences of PbHPO 4 single‐crystal lattice parameters were measured by the ratio method in the range 158–421 K. Below the ferroelectric phase transition ( T c = 310 K) lattice parameter b increases non‐linearly with decreasing temperature while all others decrease linearly. The ratio method was generalized to the monoclinic crystal system for this purpose.