4.6 Article

Effect of Sm3+ on dielectric and magnetic properties of Y3Fe5O12 nanoparticles

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DOI: 10.1007/s10854-014-2282-7

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  1. University Grants commission, New Delhi

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The Sm3+ doped Y3-xSmxFe5O12 (x = 0-3) nanopowders were prepared using modified sol-gel route. The crystalline structure and morphology was confirmed by X-ray diffraction and atomic force microscopy. The nanopowders were sintered at 950 degrees C/90 min using microwave sintering method. The lattice parameters and density of the samples were increased with an increase of Sm3+ concentration. The room temperature dielectric (epsilon' and epsilon '') and magnetic (mu' and mu '') properties were measured in the frequency range up to 20 GHz. The room temperature magnetization studies were carried out using Vibrating sample magnetometer using filed of 1.5 T. Results of VSM show that the saturation and remnant magnetization of Y3-xSmxFe5O12 (0-3) decreases on increasing the Sm concentration (x). The low values of magnetic (mu' and mu '') properties makes them a good candidates for microwave devices, which can be operated in the high frequency range.

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