Enhanced magnetoelectric sensitivity in Co{sub 0.7}Zn{sub 0.3}Fe{sub 2}O{sub 4}–Bi{sub 0.9}La{sub 0.1}FeO{sub 3} nanocomposites

Journal Article · Fri Mar 15 04:00:00 EDT 2013 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2012.11.072· OSTI ID:22290410

Kumar, Amit ^[1]

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1. Smart Materials Research Laboratory, Department of Physics, Indian Institute of Technology, Roorkee 247667 (India)

Graphical abstract: Polycrystalline nanocomposites of xCo{sub 0.7}Zn{sub 0.3}Fe{sub 2}O{sub 4}–(1 − x)Bi{sub 0.9}La{sub 0.1}FeO{sub 3} (x = 0.1, 0.2, 0.3 and 0.4) were prepared by sol–gel method with average crystallite size in the range 70–80 nm as confirmed by AFM image. Magnetization (M) and magnetocapacitance (MC) were found to be enhanced for the nanocomposite. Highlights: ► Co{sub 0.7}Zn{sub 0.3}Fe{sub 2}O{sub 4}–Bi{sub 0.9}La{sub 0.1}FeO{sub 3} nanocomposites (grain size ∼ 90 nm) prepared by sol–gel method. ► Magnetization (M) was found 4.5% more than 0.4CoFe{sub 2}O{sub 4}–0.6BiFeO{sub 3} composite. ► Magnetocapacitance (MC) is observed higher compared to Ba doped BiFeO{sub 3}. ► The value of α{sub E} was found to be 10% more than some reported. - Abstract: We report the magnetoelectric, dielectric and magnetic properties of xCo{sub 0.7}Zn{sub 0.3}Fe{sub 2}O{sub 4}–(1 − x)Bi{sub 0.9}La{sub 0.1}FeO{sub 3} (x = 0.1, 0.2, 0.3 and 0.4) nanocomposites prepared by sol–gel method. The X-ray diffraction patterns of sintered pellets show the formation of composite phases. The average crystallite size obtain by Williamson–Hall plot for different nanocomposites were found to be in the range 70–80 nm, which are in agreement with particle size calculated from atomic force microscopy. Magnetoelectric voltage coefficient (α{sub E} = 315 mV/cm Oe) and the magnetocapacitance (MC = 3.1%) for x = 0.3 were found to be higher than other synthesized nanocomposites.

• OSTI ID: 22290410
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 3 Vol. 48; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ATOMIC FORCE MICROSCOPY
CERAMICS
COMPOSITE MATERIALS
DIELECTRIC MATERIALS
DOPED MATERIALS
ELECTRICAL PROPERTIES
GRAIN SIZE
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MAGNETIZATION
NANOSTRUCTURES
PARTICLE SIZE
POLYCRYSTALS
SENSITIVITY
X-RAY DIFFRACTION