Table of Contents
Journal of Ceramics
Volume 2013, Article ID 901375, 6 pages
http://dx.doi.org/10.1155/2013/901375
Research Article

Possibility of NiCuZn Ferrites Composition for Stress Sensor Applications

1Department of Physics, Changwon National University, Changwon 641773, Republic of Korea
2School of Advanced Sciences, VIT University, Vellore 632014, India
3School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, China
4Department of Materials Science and Nanotechnology, Yogi Vemana University, Kadapa 516227, India
5Department of Physics, Sri Krishnadevaraya University, Anantapur 515055, India

Received 5 November 2012; Accepted 10 December 2012

Academic Editor: Zhenxing Yue

Copyright © 2013 M. Penchal Reddy et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

NiCuZn ferrite with composition of (N Cu0.10Zn0.60F ) (where , 0.02, 0.04, 0.06, 0.08, and 0.10) was prepared by the conventional ceramic double sintering technique. The formation of single phase was confirmed by X-ray diffraction. The microstructural features were also studied by electronic microscopy and are reported. Initial permeability measurements on these samples were carried out in the temperature range of 30 to 300°C. The effect of external applied stress on the open magnetic circuit type coil with these ferrite cores was studied by applying uniaxial compressive stress parallel to the magnetizing direction and the change in the inductance was measured. The variation of inductance (ΔL/L)% increases up to certain applied compressive stress and there after it decreases, showing different stress sensitivities for different compositions of ferrites studied in the present work. The variation of ratio of inductance (ΔL/L)% with external applied compressive stress was examined. These results show that the Ni0.42Cu0.10Zn0.60Fe1.76O3.76 and Ni0.44Cu0.10Zn0.60Fe1.72O3.72 samples are found to be suitable for inductive stress sensor applications.