Single crystal growth of cuprates from hydroxide fluxes

S. A. Sunshine, T. Siegrist, Lynn Schneemeyer

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Barium and potassium hydroxide have been investigated as fluxes for the growth of cuprate single crystals. The relatively high solubility of transition metals and lanthanoids in these salt fluxes at moderate temperatures allows significant lowering of the growth temperatures required for many phases. Also, phases not stable at high temperatures become accessible. Two new cuprates have been prepared in the Ba-Ca-Cu-O and Ba-Y-Cu-O systems from a Ba(OH)2 · H2O flux. The compounds Ba3(Y0.23Cu0.77)2O5.78 and Ba3(Ca0.24Cu0.76)2O4.43 crystallize in a tetragonal (space group I4/mmm) oxygen deficient Sr3Ti2O7-type structure with lattice parameters a = 4.069(2) Å, 4.022(1) Å and c = 21.61(2) Å, 21.63(2) Å, respectively. The compound (Ba0.92Sr0.08)(Ca0.38Cu0.62)O 2.1 crystallizes with a doubled perovskite unit cell along all three axes, a = 8.116(4) Å. In addition, single crystals of Ba2YCu3O7-δ have been prepared from a KOH flux at 750 °C.

Original languageEnglish
Pages (from-to)1210-1213
Number of pages4
JournalJournal of Materials Research
Volume12
Issue number5
DOIs
StatePublished - 1 Jan 1997

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Crystallization
Crystal growth
cuprates
hydroxides
crystal growth
Single crystals
Fluxes
single crystals
potassium hydroxides
Potassium hydroxide
Lanthanoid Series Elements
Growth temperature
Barium
Perovskite
Lattice constants
barium
Transition metals
lattice parameters
solubility
Solubility

Cite this

Sunshine, S. A. ; Siegrist, T. ; Schneemeyer, Lynn. / Single crystal growth of cuprates from hydroxide fluxes. In: Journal of Materials Research. 1997 ; Vol. 12, No. 5. pp. 1210-1213.
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abstract = "Barium and potassium hydroxide have been investigated as fluxes for the growth of cuprate single crystals. The relatively high solubility of transition metals and lanthanoids in these salt fluxes at moderate temperatures allows significant lowering of the growth temperatures required for many phases. Also, phases not stable at high temperatures become accessible. Two new cuprates have been prepared in the Ba-Ca-Cu-O and Ba-Y-Cu-O systems from a Ba(OH)2 · H2O flux. The compounds Ba3(Y0.23Cu0.77)2O5.78 and Ba3(Ca0.24Cu0.76)2O4.43 crystallize in a tetragonal (space group I4/mmm) oxygen deficient Sr3Ti2O7-type structure with lattice parameters a = 4.069(2) {\AA}, 4.022(1) {\AA} and c = 21.61(2) {\AA}, 21.63(2) {\AA}, respectively. The compound (Ba0.92Sr0.08)(Ca0.38Cu0.62)O 2.1 crystallizes with a doubled perovskite unit cell along all three axes, a = 8.116(4) {\AA}. In addition, single crystals of Ba2YCu3O7-δ have been prepared from a KOH flux at 750 °C.",
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Single crystal growth of cuprates from hydroxide fluxes. / Sunshine, S. A.; Siegrist, T.; Schneemeyer, Lynn.

In: Journal of Materials Research, Vol. 12, No. 5, 01.01.1997, p. 1210-1213.

Research output: Contribution to journalArticle

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