Magnetic and electric modulus properties of In substituted Mg–Mn–Cu ferrites. (January 2016)

• Record Type: Journal Article
• Authors: Kaiser, M.
• Is Part Of: Materials research bulletin. Volume 73(2016)
• Page Start: 452
• Page End: 458
• Publication Date: 2016-01
• Subjects: Ceramics -- X-ray diffraction -- Electrical properties -- Mossbauer spectroscopy -- Magnetic properties; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2015.09.015
• Languages: English
• ISSNs: 0025-5408

Abstract

Graphical abstract: Highlights: Ferrite of composition Mg1− y Cu y Mn0.1 In x Fe1.9− x O4 with (0.0 ≤ x ≤ 0.4; y = 0.0; 0.1) has been synthesized. Electric, magnetic and Mössbauer studies have been investigated. The real and imaginary parts of electric modulus follow the Arrhenius law. Saturation magnetization increases up to x = 0.2 and thereafter it decreases. Good agreement between the magnetic and Mössbauer effect studies. Abstract: Ferrite of composition Mg(1− y ) Cu( y ) Mn(0.1) In( x ) Fe(1.9 −x ) O4 with (0.0 ≤ x ≤ 0.4; y = 0.0 and y = 0.1) has been synthesized by solid state reaction technique. X-ray diffraction (XRD) patterns of the samples indicated the formation of single-phase cubic spinel structure up to 0.2 and mixed phase for samples x ≥ 0.3. Vibrating sample magnetometer (VSM) measurements indicated that the saturation magnetization increases up to x = 0.2 and thereafter it decreases. Electric modulus analysis was used as a tool to analyze the electrical behavior of the samples. The activation energies extracted from real M ′ ( ω ) and imaginary M ″ ( ω ) peaks were found to follow the Arrhenius law. The area ratio of Fe 3+ at the tetrahedral A- and octahedral B-sites was deduced from the spectral analysis of Mössbauer measurements. The results give evidence that In 3+ replaces Fe 3+ at A-site in the range (0.0 < x ≤ 0.2). As the In 3+ content increases; it replaces Fe at B-site.