Published October 15, 2014 | Version v1
Journal article Metadata-only

Effect of the synthesis atmosphere on the magnetic and structural properties of TbMnO3 multiferroic polycrystals

Creators

  • 1. Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, Maringá, Paraná 87020-900 (Brazil)
  • 2. Departamento de Física Aplicada, Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin, Barão Geraldo, Campinas, São Paulo 13083-970 (Brazil)
  • 3. Departamento de Física, Universidade Federal de São Carlos, Rod. Washington Luiz, Km 235, São Carlos, São Paulo 13565-345 (Brazil)
  • 4. Laboratório de Ciências Físicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Avenida Alberto Lamego, 2000, Campos dos Goytacazes, Rio de Janeiro 28013-602 (Brazil)

Description

Nanostructured orthorhombic TbMnO3 polycrystals were synthesized by high-energy ball milling and annealing in Ar or O2 atmospheres. Oxygen annealed samples show shrunken unit cells in comparison with Ar annealed ones, without Mn valence changes in both cases. Magnetic and dielectric investigations show strong evidence of long-range (43 K) and quasi-long-range (9 K) ordering for Mn and Tb ions, respectively, and a noncollinear spin-spiral magnetic ordering of Mn spins, with higher magnetic response and ferroelectric state for argon synthesized samples

Availability note (English)

Available from http://dx.doi.org/10.1016/j.scriptamat.2014.06.028

Additional details

Identifiers

DOI
10.1016/j.scriptamat.2014.06.028;
PII
S1359-6462(14)00259-0;

Publishing Information

Journal Title
Scripta Materialia
Journal Volume
89
Journal Page Range
p. 65-68
ISSN
1359-6462
CODEN
SCMAF7

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
47011097
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ANNEALING; ARGON; ELECTRICAL PROPERTIES; FERROELECTRIC MATERIALS; MAGNETIC PROPERTIES; MAGNETIZATION; MILLING; NANOSTRUCTURES; ORTHORHOMBIC LATTICES; POLYCRYSTALS; SPIN; SYNTHESIS; TERBIUM IONS
Descriptors DEC
ANGULAR MOMENTUM; CHARGED PARTICLES; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CRYSTALS; DIELECTRIC MATERIALS; ELEMENTS; FLUIDS; GASES; HEAT TREATMENTS; IONS; MACHINING; MATERIALS; NONMETALS; PARTICLE PROPERTIES; PHYSICAL PROPERTIES; RARE GASES; THREE-DIMENSIONAL LATTICES

Optional Information

Copyright
Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.