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Characterization of Lanthanum(III) Chromium(V) Tetraoxide by X-Ray Photoelectron Spectroscopy
Title: | Characterization of Lanthanum(III) Chromium(V) Tetraoxide by X-Ray Photoelectron Spectroscopy |
Authors: | KONNO, Hidetaka Browse this author | TACHIKAWA, Hiroto Browse this author →KAKEN DB | FURUSAKI, Atsushi Browse this author | FURUICHI, Ryusaburo Browse this author |
Keywords: | Lanthanum(III) chromium(V) monazite type oxide | lanthanum(III) chromium(III) perovskite type oxide | X-ray photoelectron spectroscopy | ab initio molecular orbital calculation |
Issue Date: | Oct-1992 |
Publisher: | Japan Society for Analytical Chemistry |
Journal Title: | Analytical Sciences |
Volume: | 8 |
Issue: | 5 |
Start Page: | 641 |
End Page: | 646 |
Publisher DOI: | 10.2116/analsci.8.641 |
Abstract: | Lanthanum(III) chromium(V) tetraoxide, LaCrO4, was synthesized by a thermal decomposition method and characterized by X-ray photoelectron spectroscopy and ab initio molecular orbital calculations. The chromium(V) state in LaCrO4 is stable in both air and vacuum. The electron binding energies, EB, and Auger parameters, α, of Cr(V) and La(III) indicated that the covalency of the Cr-O bonds in CrO4 tetrahedra is higher than that in CrO6 octahedra of LaCrO3, and that La(III) in LaCrO4 is more ionic than in LaCrO3. The results of ab initio molecular orbital calculations agreed with the measured characteristics, that is, the electrons are flowing from oxygen to Cr(V) and the covalency plays a significant part in the Cr-O bonds. This behavior of the Cr-O bond was considered to contribute to stabilizing CrO43- tetrahedra. |
Type: | article |
URI: | http://hdl.handle.net/2115/72328 |
Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 田地川 浩人
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