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Effect of sintering temperature on structural and magnetic properties of NiCuZn and MgCuZn ferrites |
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| Authors: | M Penchal Reddy W Madhuri N Ramamanohar Reddy VRK Murthy R Ramakrishna Reddy |
| Institution: | a Ceramic Composite Materials Laboratory, Department of Physics, Sri Krishnadevaraya University, Anantapur 515055, India b School of Sciences, VIT University, Vellore 632014, India c Department of Materials Science and Nanotechnology, Yogi Vemana University, Kadapa 516003, India d Microwave Laboratory, Indian Institute of Technology, Chennai 600036, India e Department of Physics, Sri Venkateswara University, Tirupati 517502, India |
| Abstract: | The low temperature microwave sintered NiCuZn and MgCuZn ferrites with compositions Ni0.35Cu0.05Zn0.60Fe2O4 and Mg0.35Cu0.05Zn0.60Fe2O4 were synthesized by conventional mixed oxide method. NiCuZn and MgCuZn ferrite samples obtained showed better sintered densities at 950 and 900 °C, respectively. The scanning electron micrographs of both the ferrite samples appear to be very much similar. The magnitude of initial permeability of MgCuZn ferrite samples is found to be obviously higher than those of NiCuZn ferrite samples at all sintering temperatures. This is mainly due to the fact that MgCuZn ferrite has smaller magnetocrystalline anisotropy constant and magnetostrictive constant. NiCuZn ferrites have higher saturation magnetization than MgCuZn ferrites, which is due to the higher magnetic moment of NiCuZn ferrites. Our results indicate that the microwave sintering method seems to be a potential technique in the MLCI technology. |
| Keywords: | Ferrites Microwave heating Initial permeability Saturation magnetization |
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