TITLE

Ferromagnetism and ferroelectricity in highly resistive Pb0.7Sr0.3(Fe0.012Ti0.988)O3 nanoparticles and its conduction by variable-range-hopping mechanism

AUTHOR(S)
Verma, Kuldeep Chand; Singh, M.; Kotnala, R. K.; Negi, N. S.
PUB. DATE
August 2008
SOURCE
Applied Physics Letters;8/18/2008, Vol. 93 Issue 7, p072904
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The enhancement in ferromagnetism and ferroelectricity at room temperature for Pb0.7Sr0.3(Fe0.012Ti0.988)O3 (PSFT) nanoparticles is proved by magnetization and polarization hysteresis loop. The x-ray diffraction and micrograph show that the PSFT nanoparticles have distorted tetragonal single phase, and their average particle’s size is 8 nm. The effect of Sr content reduces the particle size, and hence the multiferroic system becomes more resistive, which dominates the superparamagnetic/paraelectric relaxation. The variable-range-hopping conduction mechanism explained the high resistivity of PSFT nanoparticles, which suggests that the room temperature movement of electrons involves short-range order through defect states.
ACCESSION #
34135639

 

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