Studies on the structural, electrical and magnetic properties of LaCrO 3, LaCr 0.5Cu 0.5O 3 and LaCr 0.5Fe 0.5O 3 by sol-gel method

V. D. Nithya; R. Jacob Immanuel; S. T. Senthilkumar; C. Sanjeeviraja; I. Perelshtein; D. Zitoun; R. Kalai Selvan

doi:10.1016/j.materresbull.2012.04.068

Studies on the structural, electrical and magnetic properties of LaCrO ₃, LaCr _0.5Cu _0.5O ₃ and LaCr _0.5Fe _0.5O ₃ by sol-gel method

V. D. Nithya, R. Jacob Immanuel, S. T. Senthilkumar, C. Sanjeeviraja, I. Perelshtein, D. Zitoun, R. Kalai Selvan

Department of Chemistry

Bar-Ilan University

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

Abstract

The structural, electrical and magnetic properties of LaCr _0.5M _0.5O ₃ (M = Cr ³⁺, Cu ²⁺ and Fe ³⁺) synthesized by a sol-gel technique were studied. The X-ray diffraction pattern shows the structure to be orthorhombic and the size of the particles is around 100 nm as seen from the TEM images. The effects of Cu ²⁺ and Fe ³⁺ on the electrical properties of LaCrO ₃ were studied using impedance spectroscopy at room temperature (RT). The properties of LaCr _0.5Cu _0.5O ₃ were studied over a wide range of temperature from RT to 533 K. A maximum conductivity of 1.7 × 10 ^-3 S cm ^-1 was observed for LaCr _0.5Cu _0.5O ₃ at a measured temperature of 533 K. The impedance spectra indicate a negative temperature coefficient of resistance (NTCR) and also imply the conduction is through bulk of the material. The magnetic studies performed using a SQUID magnetometer interpret the antiferromagnetically ordered LaCrO ₃ to behave ferromagnetically on the addition of Cu ²⁺ and Fe ³⁺, and the magnetization was found to be enhanced in the LaCr _0.5Fe _0.5O ₃.

Original language	English
Pages (from-to)	1861-1868
Number of pages	8
Journal	Materials Research Bulletin
Volume	47
Issue number	8
DOIs	https://doi.org/10.1016/j.materresbull.2012.04.068
State	Published - Aug 2012

Keywords

B. Sol-gel chemistry
C. Impedance spectroscopy
D. Dielectric properties
D. Magnetic properties

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.materresbull.2012.04.068

Cite this

@article{cd30d070a8c143db8cd1a48d9ab3e0fb,

title = "Studies on the structural, electrical and magnetic properties of LaCrO 3, LaCr 0.5Cu 0.5O 3 and LaCr 0.5Fe 0.5O 3 by sol-gel method",

abstract = "The structural, electrical and magnetic properties of LaCr 0.5M 0.5O 3 (M = Cr 3+, Cu 2+ and Fe 3+) synthesized by a sol-gel technique were studied. The X-ray diffraction pattern shows the structure to be orthorhombic and the size of the particles is around 100 nm as seen from the TEM images. The effects of Cu 2+ and Fe 3+ on the electrical properties of LaCrO 3 were studied using impedance spectroscopy at room temperature (RT). The properties of LaCr 0.5Cu 0.5O 3 were studied over a wide range of temperature from RT to 533 K. A maximum conductivity of 1.7 × 10 -3 S cm -1 was observed for LaCr 0.5Cu 0.5O 3 at a measured temperature of 533 K. The impedance spectra indicate a negative temperature coefficient of resistance (NTCR) and also imply the conduction is through bulk of the material. The magnetic studies performed using a SQUID magnetometer interpret the antiferromagnetically ordered LaCrO 3 to behave ferromagnetically on the addition of Cu 2+ and Fe 3+, and the magnetization was found to be enhanced in the LaCr 0.5Fe 0.5O 3.",

keywords = "B. Sol-gel chemistry, C. Impedance spectroscopy, D. Dielectric properties, D. Magnetic properties",

author = "Nithya, \{V. D.\} and \{Jacob Immanuel\}, R. and Senthilkumar, \{S. T.\} and C. Sanjeeviraja and I. Perelshtein and D. Zitoun and \{Kalai Selvan\}, R.",

year = "2012",

month = aug,

doi = "10.1016/j.materresbull.2012.04.068",

language = "الإنجليزيّة",

volume = "47",

pages = "1861--1868",

journal = "Materials Research Bulletin",

issn = "0025-5408",

publisher = "Elsevier Ltd.",

number = "8",

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TY - JOUR

T1 - Studies on the structural, electrical and magnetic properties of LaCrO 3, LaCr 0.5Cu 0.5O 3 and LaCr 0.5Fe 0.5O 3 by sol-gel method

AU - Nithya, V. D.

AU - Jacob Immanuel, R.

AU - Senthilkumar, S. T.

AU - Sanjeeviraja, C.

AU - Perelshtein, I.

AU - Zitoun, D.

AU - Kalai Selvan, R.

PY - 2012/8

Y1 - 2012/8

N2 - The structural, electrical and magnetic properties of LaCr 0.5M 0.5O 3 (M = Cr 3+, Cu 2+ and Fe 3+) synthesized by a sol-gel technique were studied. The X-ray diffraction pattern shows the structure to be orthorhombic and the size of the particles is around 100 nm as seen from the TEM images. The effects of Cu 2+ and Fe 3+ on the electrical properties of LaCrO 3 were studied using impedance spectroscopy at room temperature (RT). The properties of LaCr 0.5Cu 0.5O 3 were studied over a wide range of temperature from RT to 533 K. A maximum conductivity of 1.7 × 10 -3 S cm -1 was observed for LaCr 0.5Cu 0.5O 3 at a measured temperature of 533 K. The impedance spectra indicate a negative temperature coefficient of resistance (NTCR) and also imply the conduction is through bulk of the material. The magnetic studies performed using a SQUID magnetometer interpret the antiferromagnetically ordered LaCrO 3 to behave ferromagnetically on the addition of Cu 2+ and Fe 3+, and the magnetization was found to be enhanced in the LaCr 0.5Fe 0.5O 3.

AB - The structural, electrical and magnetic properties of LaCr 0.5M 0.5O 3 (M = Cr 3+, Cu 2+ and Fe 3+) synthesized by a sol-gel technique were studied. The X-ray diffraction pattern shows the structure to be orthorhombic and the size of the particles is around 100 nm as seen from the TEM images. The effects of Cu 2+ and Fe 3+ on the electrical properties of LaCrO 3 were studied using impedance spectroscopy at room temperature (RT). The properties of LaCr 0.5Cu 0.5O 3 were studied over a wide range of temperature from RT to 533 K. A maximum conductivity of 1.7 × 10 -3 S cm -1 was observed for LaCr 0.5Cu 0.5O 3 at a measured temperature of 533 K. The impedance spectra indicate a negative temperature coefficient of resistance (NTCR) and also imply the conduction is through bulk of the material. The magnetic studies performed using a SQUID magnetometer interpret the antiferromagnetically ordered LaCrO 3 to behave ferromagnetically on the addition of Cu 2+ and Fe 3+, and the magnetization was found to be enhanced in the LaCr 0.5Fe 0.5O 3.

KW - B. Sol-gel chemistry

KW - C. Impedance spectroscopy

KW - D. Dielectric properties

KW - D. Magnetic properties

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DO - 10.1016/j.materresbull.2012.04.068

M3 - مقالة

SN - 0025-5408

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JO - Materials Research Bulletin

JF - Materials Research Bulletin

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