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DOI http://dx.doi.org/10.1103/PhysRevB.56.13796
Title First-order phase transitions in EuCo{sub 2}P{sub 2} and SrNi{sub 2}P{sub 2}
Creator/Author Huhnt, C. ; Schlabitz, W. [II. Physikalisches Institut, Universitaet zu Koeln, Zuelpicher Strasse 77, D-50937 Koeln (Germany)] ; Wurth, A. ; Mewis, A. [Institut fuer Anorganische Chemie und Strukturchemie der Heinrich-Heine-Universitaet, Universitaetsstrasse 1, D-40225 Duesseldorf (Germany)] ; Reehuis, M. [Hahn-Meitner Institut, Glienicker Strasse 100, D-10419 Berlin (Germany)]
Publication Date1997 Dec 01
OSTI IdentifierOSTI ID: 550513
Other Number(s)PRBMDO; ISSN 0163-1829
Resource TypeJournal Article
Resource RelationPhysical Review, B: Condensed Matter ; VOL. 56 ; ISSUE: 21 ; PBD: Dec 1997
Subject36 MATERIALS SCIENCE ; EUROPIUM PHOSPHIDES; CRYSTAL-PHASE TRANSFORMATIONS; COBALT PHOSPHIDES; STRONTIUM COMPOUNDS; NICKEL PHOSPHIDES; BOND LENGTHS
Description/Abstract First-order phase transitions with strong and extremely anisotropic changes of the lattice parameters were observed in the ThCr{sub 2}Si{sub 2} structure-type compounds EuCo{sub 2}P{sub 2} and SrNi{sub 2}P{sub 2}. At room temperature, with increasing pressure the phase transition occurs in SrNi{sub 2}P{sub 2} at 4 kbar and in EuCo{sub 2}P{sub 2} at 30 kbar which is in the latter probably accompanied by a valence change of Eu. On the basis of single-crystal data of ACo{sub 2}P{sub 2} (A= Ca, Sr, La, Ce, Pr, Nd, Eu) at ambient pressure and temperature we discuss the pressure dependence of the bond lengths in these compounds.{copyright}{ital 1997}{ital The American Physical Society}
Country of PublicationUnited States
LanguageEnglish
Formatpp. 13796-13804 ; PL:
System Entry Date2001 May 05

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