Crystal growth and characterization of the 4-leg spin ladder compound La2Cu2O5

C. Sekar, T. Watanabe, Azusa Matsuda

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Crystallization of La2Cu2O5 has been investigated in the La2O3-CUO system for various starting compositions both in air and oxygen atmospheres. In air, we find that there exists a new region of crystallization of La8Cu7O19 phase, just above that of La2Cu2O5. However, this region vanishes completely in flowing-oxygen atmosphere. By utilizing this, large single crystals of the 4-leg spin-ladder compound La2Cu2O5 have been successfully grown from CuO flux by the slow cooling method. Room-temperature resistivity parallel to the ladder direction (∥b) of the as-grown crystals is estimated to be 1.7×103 Ω cm. A significant decrease in the resistivity (798 mΩ cm at 300 K) is observed upon hole doping by means of high oxygen pressure annealing (approximately 400 atm) using a hot isostatic pressing furnace. However, no transition was observed from the semiconducting behavior.

Original languageEnglish
Pages (from-to)142-147
Number of pages6
JournalJournal of Crystal Growth
Volume212
Issue number1
DOIs
Publication statusPublished - 2000
Externally publishedYes

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Ladders
Crystallization
Crystal growth
ladders
crystal growth
crystallization
Oxygen
atmospheres
high pressure oxygen
hot isostatic pressing
electrical resistivity
air
oxygen
furnaces
Earth atmosphere
Hot isostatic pressing
Air
cooling
annealing
single crystals

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Crystal growth and characterization of the 4-leg spin ladder compound La2Cu2O5 . / Sekar, C.; Watanabe, T.; Matsuda, Azusa.

In: Journal of Crystal Growth, Vol. 212, No. 1, 2000, p. 142-147.

Research output: Contribution to journalArticle

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