A new manganese oxide with the Aurivillius structure: Bi2Sr2Nb2MnO12-delta

Authors
Yu, WJ Kim, YI Ha, DH Lee, JH Park, YK Seong, S Hur, NH
Citation
Wj. Yu et al., A new manganese oxide with the Aurivillius structure: Bi2Sr2Nb2MnO12-delta, SOL ST COMM, 111(12), 1999, pp. 705-709
Citations number
19
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE COMMUNICATIONS
ISSN journal
00381098 → ACNP
Volume
111
Issue
12
Year of publication
1999
Pages
705 - 709
Database
ISI
SICI code
0038-1098(1999)111:12<705:ANMOWT>2.0.ZU;2-P
Abstract
A new oxygen deficient manganese oxide, Bi2Sr2Nb2MnO12-delta with the Auriv illius type phase was successfully synthesized. It adopts an orthorhombic s tructure that has Fmmm space group symmetry, and lattice parameters of a 5. 5243(4) Angstrom, b = 5.5246(3) Angstrom, and c = 32.9996(9) Angstrom. The structure contains an oxygen deficient [MnO2-delta] layer that is interleav ed between double [NbO2] layers. Virtually no disordered distribution of Mn and Nb between two possible sites is observed. The temperature dependent d ata of magnetic susceptibility and resistivity reveal that the compound is paramagnetic and exhibits a semiconducting behaviour with the activation en ergy E-a of 0.216 eV. (C) 1999 Published by Elsevier Science Ltd. Ail right s reserved.