Study of the Solid Solutions of LiNbO3and LiTaO3with Mn2+

✍ Scribed by M.E. Villafuerte-Castrejón; J.A. Azamar-Barrios; P. Bartolo-Pérez

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 414 KB
• Volume: 140
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1997.7730

✦ Synopsis

Two unusual, extensive new solid solutions of LiNbO 3 and LiTaO 3 with MnO have been prepared, where 4Mn 2؉ replace a combination of 3Li ؉ and a pentavalent cation: Nb 5؉ or Ta 5؉ . The formulas are Li 1؊x M 1؊x Mn 4x O 3 , 0 < x < 0.13, for M ‫؍‬ Nb and 0 < x < 0.23 for M ‫؍‬ Ta. The solid solutions were characterized by X-ray powder diffraction and density measurements. The manganese oxidation states were determined by X-ray photoelectron spectroscopy.