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Magnetic Susceptibility of Ba2YbTaO6 with the Ordered Perovskite Structure and Electron Paramagnetic Resonance of Yb3+ Doped in Ba2LuTaO6

✍ Scribed by Nobuyuki Taira; Yukio Hinatsu

Publisher: Elsevier Science
Year: 2000
Tongue: English
Weight: 161 KB
Volume: 150
Category: Article
ISSN: 0022-4596
DOI: 10.1006/jssc.1999.8542

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✦ Synopsis

A quaternary oxide, Ba 2 YbTaO 6 , was prepared, and its powder X-ray di4raction measurements and the Rietveld analysis show that it is cubic with the space group Fm3 m and that Yb 3؉ and Ta 5؉ ions are structurally ordered. Magnetic susceptibilities of Ba 2 YbTaO 6 were measured in the temperature range between 5 K and room temperature, and the electron paramagnetic resonance (EPR) spectrum of Yb 3؉ ion doped in Ba 2 LuTaO 6 was measured at 8 K. This compound is paramagnetic down to 5 K, and the temperature dependence of its susceptibility was analyzed with the crystal 5eld model. Hyper5ne interaction was observed for the EPR spectrum of Yb 3؉ /Ba 2 LuTaO 6 . Analysis of the EPR data indicates the existence of the covalency in the Yb 3؉ ion in an octahedral symmetry.

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✍ Yukio Hinatsu 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 290 KB

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