Quantitative analysis of YIG, YFeO3 and Fe3O4 in LHPG-grown YIG rods

Jyh Chen Chen, Chao Chang Hu

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

The use of higher pulling rates in the laser heated pedestal growth (LHPG) method will cause the YIG (Y3Fe5O12, yttrium iron garnet) crystals thus grown to contain YFeO3, YIG and iron oxides due to rapid solidification. In the experiment, a Verwey transition, the distinctive magnetic property of magnetite, was observed near 107 K in the grown YIG rods using a super-conducting quantum interference device (SQUID) magnetometer. Moreover, the standard relationships between the YIG and YFeO3 weight ratios and the primary diffraction-intensity ratios of the YIG (420) and YFeO3 (121) peaks were obtained from the XRD data by indexing the powders with their specific ratios. We also derived the weight ratios of the three magnetic compounds in the grown rods, via measuring the saturation magnetizations. From the experimental results, the iron oxide in the grown rods is also confirmed to be magnetite. This is a good analytical technique for quantifying the magnetic compounds in a material.

Original languageEnglish
Pages (from-to)245-250
Number of pages6
JournalJournal of Crystal Growth
Volume249
Issue number1-2
DOIs
StatePublished - Feb 2003

Keywords

  • A1. X-ray diffraction
  • A2. Laser heated pedestal growth
  • B1. Oxides
  • B2. Magnetic materials

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