Enhanced magnetic and dielectric properties of Eu and Co co-doped BiFeO 3 nanoparticles

Kaushik Chakrabarti; Kajari Das; Babusona Sarkar; Sirshendu Ghosh; S. K. De; Godhuli Sinha; J. Lahtinen

doi:10.1063/1.4738992

Enhanced magnetic and dielectric properties of Eu and Co co-doped BiFeO ₃ nanoparticles

Kaushik Chakrabarti, Kajari Das, Babusona Sarkar, Sirshendu Ghosh, S. K. De, Godhuli Sinha, J. Lahtinen

Research output: Contribution to journal › Article › peer-review

217 Scopus citations

Abstract

Bi _1-xEu _xFe _1-yCo _yO ₃ (x 0, 0.01; y 0, 0.01) nanoparticles, having an average size of 13 nm, were prepared by a simple sol gel route. Strong electronegativity of Eu ³ and smaller oxidation-reduction potential of Co ³/Co ² (0.55 eV) than Fe ³/Fe ² (1.3 eV) increase the concentration of Fe ³ ions with doping. Distinct magnetic hysteresis and complete saturation of magnetisation indicate the presence of ferromagnetic phase. The successful co-doping of Eu and Co into BiFeO ₃ (BFO) lattice dramatically enhances the saturation magnetization (M _s) and coercivity (H _c) by about 20 times than that of pure BiFeO ₃. A large value of dielectric constant of about 650, low loss (0.001), and small leakage current density (1.79 × 10 ^-8 A/cm ²) are observed for the co-doped sample.

Original language	English
Article number	042401
Journal	Applied Physics Letters
Volume	101
Issue number	4
DOIs	https://doi.org/10.1063/1.4738992
State	Published - 23 Jul 2012
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4738992

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title = "Enhanced magnetic and dielectric properties of Eu and Co co-doped BiFeO 3 nanoparticles",

abstract = "Bi 1-xEu xFe 1-yCo yO 3 (x 0, 0.01; y 0, 0.01) nanoparticles, having an average size of 13 nm, were prepared by a simple sol gel route. Strong electronegativity of Eu 3 and smaller oxidation-reduction potential of Co 3/Co 2 (0.55 eV) than Fe 3/Fe 2 (1.3 eV) increase the concentration of Fe 3 ions with doping. Distinct magnetic hysteresis and complete saturation of magnetisation indicate the presence of ferromagnetic phase. The successful co-doping of Eu and Co into BiFeO 3 (BFO) lattice dramatically enhances the saturation magnetization (M s) and coercivity (H c) by about 20 times than that of pure BiFeO 3. A large value of dielectric constant of about 650, low loss (0.001), and small leakage current density (1.79 × 10 -8 A/cm 2) are observed for the co-doped sample.",

author = "Kaushik Chakrabarti and Kajari Das and Babusona Sarkar and Sirshendu Ghosh and De, {S. K.} and Godhuli Sinha and J. Lahtinen",

note = "Funding Information: Kaushik Chakrabarti, Kajari Das, and Babusona Sarkar are thankful to the Council of Scientific and Industrial Research (CSIR), Government of India, for providing fellowship. This work is funded by the Council of Scientific and Industrial Research, Government of India, Scheme No: 03(1210)/12/EMR-II.",

year = "2012",

month = jul,

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doi = "10.1063/1.4738992",

language = "English",

volume = "101",

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T1 - Enhanced magnetic and dielectric properties of Eu and Co co-doped BiFeO 3 nanoparticles

AU - Chakrabarti, Kaushik

AU - Das, Kajari

AU - Sarkar, Babusona

AU - Ghosh, Sirshendu

AU - De, S. K.

AU - Sinha, Godhuli

AU - Lahtinen, J.

N1 - Funding Information: Kaushik Chakrabarti, Kajari Das, and Babusona Sarkar are thankful to the Council of Scientific and Industrial Research (CSIR), Government of India, for providing fellowship. This work is funded by the Council of Scientific and Industrial Research, Government of India, Scheme No: 03(1210)/12/EMR-II.

PY - 2012/7/23

Y1 - 2012/7/23

N2 - Bi 1-xEu xFe 1-yCo yO 3 (x 0, 0.01; y 0, 0.01) nanoparticles, having an average size of 13 nm, were prepared by a simple sol gel route. Strong electronegativity of Eu 3 and smaller oxidation-reduction potential of Co 3/Co 2 (0.55 eV) than Fe 3/Fe 2 (1.3 eV) increase the concentration of Fe 3 ions with doping. Distinct magnetic hysteresis and complete saturation of magnetisation indicate the presence of ferromagnetic phase. The successful co-doping of Eu and Co into BiFeO 3 (BFO) lattice dramatically enhances the saturation magnetization (M s) and coercivity (H c) by about 20 times than that of pure BiFeO 3. A large value of dielectric constant of about 650, low loss (0.001), and small leakage current density (1.79 × 10 -8 A/cm 2) are observed for the co-doped sample.

AB - Bi 1-xEu xFe 1-yCo yO 3 (x 0, 0.01; y 0, 0.01) nanoparticles, having an average size of 13 nm, were prepared by a simple sol gel route. Strong electronegativity of Eu 3 and smaller oxidation-reduction potential of Co 3/Co 2 (0.55 eV) than Fe 3/Fe 2 (1.3 eV) increase the concentration of Fe 3 ions with doping. Distinct magnetic hysteresis and complete saturation of magnetisation indicate the presence of ferromagnetic phase. The successful co-doping of Eu and Co into BiFeO 3 (BFO) lattice dramatically enhances the saturation magnetization (M s) and coercivity (H c) by about 20 times than that of pure BiFeO 3. A large value of dielectric constant of about 650, low loss (0.001), and small leakage current density (1.79 × 10 -8 A/cm 2) are observed for the co-doped sample.

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DO - 10.1063/1.4738992

M3 - Article

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VL - 101

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JF - Applied Physics Letters

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M1 - 042401

ER -

Enhanced magnetic and dielectric properties of Eu and Co co-doped BiFeO ₃ nanoparticles

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