Mechanical milling induced enhancement of magnetic and hyperfine properties of nanosized Co{sub 0.3}Zn{sub 0.7}Fe{sub 2}O{sub 4}

Journal Article · Wed Jun 24 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4917751· OSTI ID:22490286

Mondal, R.; Singha, S.; Dasgupta, P.; Poddar, A. ^[1]

---

1. Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata-700064 (India)

Nanosized Co{sub 0.3}Zn{sub 0.7}Fe{sub 2}O{sub 4} having average particle size ∼20 nm has been synthesized by mechanochemical method. The results of dc magnetic and Mössbaeur studies suggest that the sample is ferrimagnetic in nature and shows superparamagnetic behavior above 230K. Magnetic ordering in the sample evolves gradually upon cooling the system below blocking temperature. Moreover, the sample exhibits enhancement of magnetic order and ordering temperature with respect to its counterpart synthesized by chemical routes mainly due to increase of stress anisotropy induced by high energy ball milling. We have shown that maintaining suitable cation distribution helps in enhancement of magnetization by reducing the adverse effect of spin canting.

• OSTI ID: 22490286
• Journal Information: AIP Conference Proceedings, Vol. 1665, Issue 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTROSCOPY
ANISOTROPY
CATIONS
CHANNELING
COBALT COMPOUNDS
COOLING
FERRITES
MAGNETIZATION
MILLING
MOESSBAUER EFFECT
NANOPARTICLES
NANOSTRUCTURES
PARTICLE SIZE
SPIN
STRESSES
SUPERPARAMAGNETISM
TEMPERATURE DEPENDENCE
ZINC COMPOUNDS