Published May 23, 2016 | Version v1
Journal article Metadata-only

Magnetic and transport properties of nanocrystalline double perovskite Sm2CoMnO6

Creators

  • 1. Department of Metallurgical & Material Engineering, Jadavpur University, Kolkata: 700 032 (India)
  • 2. MLS Professor's Unit, Indian Association for the Cultivation of Science, Kolkata: 700 032 (India)

Description

Double perovskite Sm2CoMnO6 nanoparticles of diameter around 200 nm were synthesized by a sol-gel technique. They showed ferromagnetic transition with a Curie temperature of 139 K. The saturation magnetization per formula unit (3.74 μB/f.u.) as derived from magnetization-field data at 2 K was smaller than the theoretical value 6 μB/f.u.. This was ascribed to the presence of antisite disorder. The resistivity was found to be controlled by a variable range hopping mechanism. The material exhibited negative magnetoresistance with a maximum value of 3% at 170 K for an applied field of 5 T. This was ascribed to spin-polarized electron hopping between magnetic domains coupled by an antiferromagnetic interaction.

Additional details

Identifiers

DOI
10.1063/1.4948150;

Publishing Information

Journal Title
AIP Conference Proceedings
Journal Volume
1731
Journal Issue
1
Journal Page Range
vp.
ISSN
0094-243X
CODEN
APCPCS

Conference

Title
DAE solid state physics symposium 2015
Dates
21-25 Dec 2015
Place
Uttar Pradesh (India)

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
48054878
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ANTIFERROMAGNETISM; COBALT COMPOUNDS; CRYSTALS; CURIE POINT; ELECTRIC CONDUCTIVITY; ELECTRONS; MAGNETIZATION; MAGNETORESISTANCE; MANGANATES; NANOPARTICLES; NANOSTRUCTURES; PEROVSKITE; PHASE TRANSFORMATIONS; SAMARIUM COMPOUNDS; SATURATION; SOL-GEL PROCESS; SPIN; SPIN ORIENTATION; TEMPERATURE RANGE 0065-0273 K
Descriptors DEC
ANGULAR MOMENTUM; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTARY PARTICLES; FERMIONS; LEPTONS; MAGNETISM; MANGANESE COMPOUNDS; MINERALS; ORIENTATION; OXIDE MINERALS; OXYGEN COMPOUNDS; PARTICLE PROPERTIES; PARTICLES; PEROVSKITES; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TRANSITION TEMPERATURE

Optional Information

Notes
(c) 2016 Author(s)