Stabilization of New Forms of the Intermetallic Phases β-RENiGe 2 (RE = Dy, Ho, Er, Tm, Yb, Lu) in Liquid Indium

J. R. Salvador, J. R. Gour, D. Bilc, S. D. Mahanti, Mercouri G Kanatzidis

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Abstract

Flux conditions using liquid indium bypass the thermodynamically stable structure and yield new forms of the phases RENiGe2 (RE = Dy, Er, Yb, Lu). The compounds crystallize in the orthorhombic Immm space group and possess the YlrGe2 structure type. Lattice parameters for ErNiGe 2, DyNiGe2, YbNiGe2, and LuNiGe2 are a = 4.114(1) Å, b = 8.430(2) Å, c = 15.741(5) Å; a = 4.1784(9) Å, b = 8.865(2) Å, c = 15.745(3) Å; a = 4.0935(6) Å, b = 8.4277(13) Å, c = 15.751(2) Å, and a = 4.092(1) Å, b = 8.418(3) Å, c = 15.742(5) Å, respectively. These phases represent a new structural arrangment (β) of the compound type RENiGe2 as another set of compounds with identical stoichiometry are known to adopt the orthorhombic Cmcm CeNiSi2 type structure (α). In this paper we report the crystal and electronic band structure of four new members of the YlrGe2 structure type, as well as an investigation of the relative thermodynamic stabilities of the two forms.

Original languageEnglish
Pages (from-to)1403-1410
Number of pages8
JournalInorganic Chemistry
Volume43
Issue number4
DOIs
Publication statusPublished - Feb 23 2004

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Indium
bypasses
Stoichiometry
Band structure
Lattice constants
Intermetallics
intermetallics
indium
stoichiometry
lattice parameters
Thermodynamic stability
Stabilization
stabilization
Fluxes
thermodynamics
Crystals
Liquids
liquids
electronics
crystals

ASJC Scopus subject areas

  • Inorganic Chemistry

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Stabilization of New Forms of the Intermetallic Phases β-RENiGe 2 (RE = Dy, Ho, Er, Tm, Yb, Lu) in Liquid Indium. / Salvador, J. R.; Gour, J. R.; Bilc, D.; Mahanti, S. D.; Kanatzidis, Mercouri G.

In: Inorganic Chemistry, Vol. 43, No. 4, 23.02.2004, p. 1403-1410.

Research output: Contribution to journalArticle

Salvador, J. R. ; Gour, J. R. ; Bilc, D. ; Mahanti, S. D. ; Kanatzidis, Mercouri G. / Stabilization of New Forms of the Intermetallic Phases β-RENiGe 2 (RE = Dy, Ho, Er, Tm, Yb, Lu) in Liquid Indium. In: Inorganic Chemistry. 2004 ; Vol. 43, No. 4. pp. 1403-1410.
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abstract = "Flux conditions using liquid indium bypass the thermodynamically stable structure and yield new forms of the phases RENiGe2 (RE = Dy, Er, Yb, Lu). The compounds crystallize in the orthorhombic Immm space group and possess the YlrGe2 structure type. Lattice parameters for ErNiGe 2, DyNiGe2, YbNiGe2, and LuNiGe2 are a = 4.114(1) {\AA}, b = 8.430(2) {\AA}, c = 15.741(5) {\AA}; a = 4.1784(9) {\AA}, b = 8.865(2) {\AA}, c = 15.745(3) {\AA}; a = 4.0935(6) {\AA}, b = 8.4277(13) {\AA}, c = 15.751(2) {\AA}, and a = 4.092(1) {\AA}, b = 8.418(3) {\AA}, c = 15.742(5) {\AA}, respectively. These phases represent a new structural arrangment (β) of the compound type RENiGe2 as another set of compounds with identical stoichiometry are known to adopt the orthorhombic Cmcm CeNiSi2 type structure (α). In this paper we report the crystal and electronic band structure of four new members of the YlrGe2 structure type, as well as an investigation of the relative thermodynamic stabilities of the two forms.",
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AB - Flux conditions using liquid indium bypass the thermodynamically stable structure and yield new forms of the phases RENiGe2 (RE = Dy, Er, Yb, Lu). The compounds crystallize in the orthorhombic Immm space group and possess the YlrGe2 structure type. Lattice parameters for ErNiGe 2, DyNiGe2, YbNiGe2, and LuNiGe2 are a = 4.114(1) Å, b = 8.430(2) Å, c = 15.741(5) Å; a = 4.1784(9) Å, b = 8.865(2) Å, c = 15.745(3) Å; a = 4.0935(6) Å, b = 8.4277(13) Å, c = 15.751(2) Å, and a = 4.092(1) Å, b = 8.418(3) Å, c = 15.742(5) Å, respectively. These phases represent a new structural arrangment (β) of the compound type RENiGe2 as another set of compounds with identical stoichiometry are known to adopt the orthorhombic Cmcm CeNiSi2 type structure (α). In this paper we report the crystal and electronic band structure of four new members of the YlrGe2 structure type, as well as an investigation of the relative thermodynamic stabilities of the two forms.

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