New layered perovskite family built from [CeTa2O7]- layers: coloring mechanism from unique multi-transitions

Takuya Hasegawa; Atsushi Shigee; Yoshinori Nishiwaki; Makoto Nagasako; Adie Tri Hanindriyo; Kenta Hongo; Ryo Maezono; Tadaharu Ueda; Shu Yin

doi:10.1039/d0cc03466e

New layered perovskite family built from [CeTa₂O₇]^- layers: coloring mechanism from unique multi-transitions

Chem Commun (Camb). 2020 Jul 31;56(61):8591-8594. doi: 10.1039/d0cc03466e.

Authors

Takuya Hasegawa¹, Atsushi Shigee², Yoshinori Nishiwaki³, Makoto Nagasako⁴, Adie Tri Hanindriyo⁵, Kenta Hongo⁶, Ryo Maezono⁷, Tadaharu Ueda⁸, Shu Yin¹

Affiliations

¹ Institute of Multidisciplinary Research for Advanced Material (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan. [email protected].
² Department of Marine Resources Science, Faculty of Agriculture and Marine Science, Kochi University, Nankoku, 783-8502, Japan.
³ Teacher Training Division (Science Education Course), Faculty of Education, Kochi University, Kochi 780-8520, Japan.
⁴ Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
⁵ School of Materials Science, JAIST, Asahidai 1-1, Nomi, Ishikawa 923-1292, Japan.
⁶ Research Center for Advanced Computing Infrastructure, JAIST, Asahidai 1-1, Nomi, Ishikawa 923-1292, Japan.
⁷ School of Information Science, JAIST, Asahidai 1-1, Nomi, Ishikawa 923-1292, Japan.
⁸ Department of Marine Resources Science, Faculty of Agriculture and Marine Science, Kochi University, Nankoku, 783-8502, Japan and Center for Advanced Marine Core Research, Kochi University, Nankoku, 783-8502, Japan.

PMID: 32588849
DOI: 10.1039/d0cc03466e

Abstract

A Ce3+-based layered perovskite compound, Dion-Jacobson type RbCeTa2O7, has been discovered for the first time by introducing only a trivalent cerium ion to form [CeTa2O7]- layers. The unique green color was experimentally and theoretically ascribed to two charge transfer transitions of ligand-to-metal O2p → Ce4f and metal-to-metal Ce4f → Ta5d.