Published October 1, 2005 | Version v1
Journal article Metadata-only

Effects of Mn3+ ions on the electrical and magnetic properties of Ca(Mn1-x Zr x )O3-δ (0x0.07)

Creators

  • 1. Research Laboratory for Surface Science, Faculty of Science, Okayama University, 3-1-1 Tsushima-naka, Okayama 700-8530 (Japan)
  • 2. Faculty of Engineering, Doshisha University, Kyo-tanabe, Kyoto 610-0321 (Japan)
  • 3. Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531 (Japan)

Description

Perovskite-type Ca(Mn1-x Zr x )O3-δ (0x0.07) has an orthorhombic GdFeO3-type structure with space group Pnma. According to the Rietveld method, the (Mn, Zr)-O distance is independent of x and the (Mn, Zr)-O-(Mn, Zr) angles decrease very slightly with x. The electrical measurement indicates that Ca(Mn1-x Zr x )O3-δ is an n-type semiconductor and exhibits hopping conductivity in a small-polaron model. The magnetic measurement indicates that Ca(Mn1-x Zr x )O3-δ is antiferromagnetic and that the spin state of the Mn3+ ion is low. The activation energy for hopping (E h) has a minimum value (∼0.043 eV) at x=0.03 due to acceleration of the electron transfer through the Mn(III)-O-Mn(IV) path and the inhibition of the electron transfer by Zr4+ ions

Additional details

Identifiers

DOI
10.1016/j.physb.2005.06.016;
PII
S0921-4526(05)00832-X;

Publishing Information

Journal Title
Physica. B, Condensed Matter
Journal Volume
367
Journal Issue
1-4
Journal Page Range
p. 188-194
ISSN
0921-4526
CODEN
PHYBE3

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
37068310
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ACTIVATION ENERGY; ANTIFERROMAGNETISM; CALCIUM COMPOUNDS; CUBIC LATTICES; DISTANCE; ELECTRIC CONDUCTIVITY; ELECTRON TRANSFER; EV RANGE; MAGNETIC PROPERTIES; MANGANATES; MANGANESE IONS; N-TYPE CONDUCTORS; ORTHORHOMBIC LATTICES; PEROVSKITE; POLARONS; SPACE GROUPS; SPIN; ZIRCONIUM ADDITIONS; ZIRCONIUM IONS
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; ALLOYS; ANGULAR MOMENTUM; CHARGED PARTICLES; CRYSTAL LATTICES; CRYSTAL STRUCTURE; ELECTRICAL PROPERTIES; ENERGY; ENERGY RANGE; IONS; MAGNETISM; MANGANESE COMPOUNDS; MATERIALS; MINERALS; OXIDE MINERALS; OXYGEN COMPOUNDS; PARTICLE PROPERTIES; PEROVSKITES; PHYSICAL PROPERTIES; QUASI PARTICLES; SEMICONDUCTOR MATERIALS; SYMMETRY GROUPS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM ALLOYS

Optional Information

Copyright
Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.