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Orthorhombic Polymorph of ErP 5 O 14 , Crystal Structure and Characterization
Author(s) -
Katrusiak Andrzej,
Kaczmarek Franciszek
Publication year - 1995
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170300414
Subject(s) - orthorhombic crystal system , monoclinic crystal system , crystallography , crystal structure , materials science , crystal (programming language) , group (periodic table) , chemistry , organic chemistry , computer science , programming language
Erbium pentaphosphate crystals have been characterized and the structure of the orthorhombic polymorph (type III) determined by X‐rays. It has been found that the orthorhombic samples of ErP 5 O 14 , space group Pnma, crystallize mainly at higher temperatures and usually are much larger than monoclinic crystals, space group C2/c, obtained from lower‐temperature crystallizations. Differences in fluorescence and upconversion properties between orthorhombic and monoclinic polymorphs have been detected.