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Europium Phosphate, Europium Arsenate, and Europium Antimonate – Correlation of Crystal Structure and Physical Properties
Author(s) -
Golbs Sylvia,
Schappacher Falko M.,
Pöttgen Rainer,
CardosoGil Raul,
Ormeci Alim,
Schwarz Ulrich,
Schnelle Walter,
Grin Yuri,
Schmidt Marcus
Publication year - 2013
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201300285
Subject(s) - europium , antimonate , chemistry , paramagnetism , ion , analytical chemistry (journal) , inorganic chemistry , antimony , organic chemistry , physics , quantum mechanics
Crystals of EuPO 4 , EuAsO 4 , and EuSbO 4 were grown by chemical vapor transport. These compounds exhibit complex anions and they crystallize in different structures. The modelling of the chemical transport experiment was carried out with the program TRAGMIN. By means of different spectroscopic methods structural and electronic influences of the complex anion on the electronic state of the europium ion were investigated. These results were in good agreement with calculations of the electronic structure. The magnetic susceptibility shows the typical van Vleck paramagnetism of trivalent europium. The specific heat capacity was determined in the range from 1.9 to 320 K. The conformity of these results was checked on the basis of specific heat determination through differential scanning calorimetry (DSC) in the temperature range 235 to 473 K. The optical bandgaps, received from UV/Vis spectroscopy are in good agreement with calculated ones.