Structural properties and magnetic interactions in Al3+ and Cr3+ co-substituted CoFe2O4 ferrite

• Authors: Surendra More , Ram Kadam , Ankush Kadam , Dhanraj Mane , Govind Bichile
• Languages of publication: EN

Abstracts

EN

A series of CoAlxCrxFe2−2xO4 systems (x = 0.1 to 0.5 in steps of x = 0.1) spinel ferrites have been synthesized successfully using wet chemical co-precipitation technique. The samples were characterized by X-ray diffraction (XRD), infrared spectroscopy (IR) and magnetization measurements. The powder XRD patterns confirm the single phase spinel structure for the materials synthesized. X -ray diffraction measurements were performed to yield the lattice constant as function of the amount x corresponding to Al-Cr substitution. Lattice parameters, X-ray density, bulk density and particle size decrease whereas porosity increases with the increase in Al-Cr content, ‘x’. Infrared studies show two absorption bands at about 400 cm−1 and 600 cm−1 for octahedral and tetrahedral sites, respectively. Saturation magnetization decreases with the increase in Al-Cr content x. AC magnetic susceptibility measurements were carried out as a function of temperature to measure the Curie temperature, which was found to decrease with Al-Cr content x. The decrease of Curie temperature has been explained by A-B interaction. [...]

Keywords

EN

Substituted CoFe2O4 ferrite; Chemical synthesis; Magnetization; X-ray diffraction; Magnetic measurements

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2010
• Volume: 8
• Issue: 2
• Pages: 419-425

Dates

published

1 - 4 - 2010

online

23 - 3 - 2010

Contributors

author

Surendra More

• Department of Physics, Yashwantrao Chavan Mahavidyalaya, Tuljapur, 413 601, Osmanabad, India

author

Ram Kadam

• Department of Physics, Shrikrishna Mahavidyalaya, Gunjoti, Osmanabad, 413 613, India

author

Ankush Kadam

• Department of Physics, Jawahar Mahavidyalaya, Andoor, 413 606, India

author

Dhanraj Mane

• Department of Physics, Shrikrishna Mahavidyalaya, Gunjoti, Osmanabad, 413 613, India

author

Govind Bichile

• Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, 431 004, India

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Identifiers

DOI

10.2478/s11532-009-0145-5