Novel approaches to crystallize materials with narrow liquidus lines: Application to spin ladder compound La4+4nCu8+2nO14+8n (n = 2,3) and high-Tc cuprate Bi-2223

T. Watanabe, C. Sekar, H. Shibata, T. Fujii, Azusa Matsuda, Y. Zenitani, J. Akimitsu

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We propose two novel approaches, a modified slow cooling (MSC) method and an improved traveling solvent floating zone (I-TSFZ) method, to crystallize materials with narrow liquidus lines. The MSC method uses a flux-poor starting composition to attain sufficient supersaturation, and involves a rapid cooling from high temperature to a proper crystallization temperature to avoid the formation of unwanted phases. The I-TSFZ method uses a very slow growth velocity to grow crystals under small supersaturation, and a steep temperature gradient to precisely control the growth temperature. The MSC method and the I-TSFZ method have been successfully applied to grow spin ladder compounds La4 + 4nCu8 + 2nO14 + 8n (n = 2,3) and a high-Tc cuprate Bi2Sr2Ca2CU3O10 + δ respectively.

Original languageEnglish
Pages (from-to)316-320
Number of pages5
JournalJournal of Crystal Growth
Volume229
Issue number1
Publication statusPublished - 2001 Jul 2
Externally publishedYes

Fingerprint

liquidus
Ladders
ladders
cuprates
floating
Cooling
cooling
Supersaturation
supersaturation
Growth temperature
Crystallization
Thermal gradients
temperature gradients
crystallization
Fluxes
Temperature
Crystals
temperature
Chemical analysis
crystals

Keywords

  • A1. Optical microscopy
  • A1. X-ray diffraction
  • A2. Growth from high temperature solutions
  • A2. Travelling solvent floating zone growth
  • B1. Cuprates
  • B1. Oxides
  • B2. Oxide superconducting materials

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Novel approaches to crystallize materials with narrow liquidus lines : Application to spin ladder compound La4+4nCu8+2nO14+8n (n = 2,3) and high-Tc cuprate Bi-2223. / Watanabe, T.; Sekar, C.; Shibata, H.; Fujii, T.; Matsuda, Azusa; Zenitani, Y.; Akimitsu, J.

In: Journal of Crystal Growth, Vol. 229, No. 1, 02.07.2001, p. 316-320.

Research output: Contribution to journalArticle

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AU - Watanabe, T.

AU - Sekar, C.

AU - Shibata, H.

AU - Fujii, T.

AU - Matsuda, Azusa

AU - Zenitani, Y.

AU - Akimitsu, J.

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KW - B2. Oxide superconducting materials

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