Low-temperature synthesis of la2CuO4 with the T′-structure from molten hydroxides

Yoshinori Imai, Masatsune Kato, Yuichiro Takarabe, Takashi Noji, Yoji Koike

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Well-crystallized bulk samples of T′-La2CuO4were successfully synthesized at a temperature as low as 350 °C by the direct precipitation from the molten KOH/NaOH eutectic mixture. Stoichiometric amounts of La203 and Cu powders were mixed, ground, and put in an alumina crucible together with KOH and NaOH. The melt was quenched to room temperature by removing the alumina crucible from the furnace. A black polycrystalline powder was isolated by dissolving the hydroxides with distilled water and drying at 150 °C in air. The structural analysis was carried out by powder X-ray diffraction using Cu Ka radiation. Magnetic susceptibility measurements were performed using a SQUID magnetometer. The techniques using molten hydroxides has been found to be very useful for the synthesis of well-crystallized bulk samples at low temperatures.

Original languageEnglish
Pages (from-to)3584-3585
Number of pages2
JournalChemistry of Materials
Volume19
Issue number15
DOIs
Publication statusPublished - 2007 Jul 24

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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