Electrical and Magnetic Properties of Some Mixed LnIIIOxN1-x Phases

✍ Scribed by Guo Liu; X. Chen; H.A. Eick

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 284 KB
• Volume: 103
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1993.1093

✦ Synopsis

Some pseudobinary and pseudoternary oxidenitrides (\left(\mathrm{CeN}-\mathrm{CeO}{2} ; \mathrm{LaN}{\mathrm{L}} \mathrm{Ln}{2} \mathrm{O}{3} ; \mathrm{CeN}-\mathrm{Ln}{2} \mathrm{O}{3}, \mathrm{Ln}=\right.) La. (\mathrm{Y}:) and (\mathrm{YN}-L n_{2} \mathrm{O}{3}, L n=\mathrm{La}, \mathrm{Lu}, \mathrm{Y}, \mathrm{Sc}) ) were prepared in (\mathrm{Ta}, \mathrm{Nb}), or Mo containers at temperatures between 1500 and (1800^{\circ} \mathrm{C}) and characterized by X-ray powder diffraction. Electrical and magnetic properties of two oxidenitrides, (\mathrm{LaO}{1, .31} \mathrm{~N}{1.69}) (I) and (\mathrm{LaO}{0.45} \mathrm{~N}{0.55}(1)) ), were determined over the temperature range (2-300 \mathrm{~K}). Both are weakly paramagnetic and metallic. Room temperature ((300 \mathrm{~K})) resistivities for (I) and 11 are (4.8 \times 10^{-3}) and (5.9 \times 10^{-5} \Omega \mathrm{cm}), respectively. As the temperature is lowered, resistivities of (\mathrm{LaO}, \mathrm{N}{1-\mathrm{r}}) initially decrease linearly. 01993 ^cademic Press. Inc.