Crystal growth and characterizations of ErRh3B2

Toetsu Shishido, Jinhua Ye, Masaoki Oku, Shigeru Okada, Kunio Kudou, Takahiko Sasaki, Takehiko Matsumoto, Tsuguo Fukuda

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Single crystals of ternary boride ErRh3B2 have been successfully grown by the flux method using molten copper as a solvent; a variety of properties concerning the crystal structure and chemical states of the compound were investigated. ErRh3B2 belongs to a monoclinic system isomorphous with ErIr3B2: space group C2/m, a = 0.5355(1), b = 0.9282(1), c = 0.3102(1) nm and β= 90.89(3)°. A superlattice appears along both the a and c axes with periods of 3a and 6c respectively. X-ray photoelectron spectroscopic study indicates that boron acts as an electron donor. According to the differential thermal analysis in air, the oxidation of the compound starts at 373°C. The weight gain of the sample after heating in air up to 1200°C is 15.44%, and the mixed phase of ErBO3 and Rh is confirmed by X-ray diffraction measurement. The value of the micro-Vickers hardness for (001) and (100) faces of the crystals is 11.3-12.0 GPa and 10.4-10.9 GPa respectively.

Original languageEnglish
Pages (from-to)18-23
Number of pages6
JournalJournal of Alloys and Compounds
Volume248
Issue number1-2
DOIs
Publication statusPublished - 1997 Feb 15

Keywords

  • Crystal structure
  • ErRhB
  • Micro-Vickers hardness
  • TG-DTA
  • XPS

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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