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- W2017185323 abstract "This paper attempts to provide a historical survey of structure of various types of hexaferrites. It provides information about synthesis, characterization, structural, magnetic and dielectric properties of Y-type hexagonal ferrites using various chemical routes. We have prepared a series of cobalt doped Sr 2 Cu 2-x Co x Fe 12 O 22 (x = 0.0 to 1.0) hexaferrites using a wet chemical co-precipitation technique. The prepared hexaferrite precursors were calcined at 950 °C for 4 hours in a furnace and slowly cooled to room temperature. The crystal structure of Y-type hexaferrites is rather complicated. The chemical and structural changes were examined in detail by X-ray diffraction (XRD), Differential scanning calorimetry (DSC), Scanning electron microscopy (SEM), and Fourier transform infra-red (FTIR) spectroscopy. X-ray diffraction studies showed that sintering temperature as low as 950°C was sufficient to produce a single-phase Y-type hexaferrite material. The dielectric measurements were carried out over the frequency range of 100 Hz to 2 MHz at room temperature using an LCR meter to study the variation of dielectric constant and loss tangent with frequency. The magnetic properties of hexaferrite samples were investigated using a vibration sample magnetometer (VSM), and a superconducting quantum interference device (SQUID) magnetometer in the temperature range 30K to 200K. A change from ferromagnetic state to super paramagnetic state has been observed in Co doped Sr 2 Cu 2-x Co x Fe 12 O 22 (x= 0.6 to 1.0) hexaferrite. The novel applications of all types of hexaferrite materials have been described." @default.
- W2017185323 created "2016-06-24" @default.
- W2017185323 creator A5004959003 @default.
- W2017185323 creator A5085133309 @default.
- W2017185323 date "2012-06-01" @default.
- W2017185323 modified "2023-10-16" @default.
- W2017185323 title "Y-Type Hexaferrites: Structural, Dielectric and Magnetic Properties" @default.
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- W2017185323 doi "https://doi.org/10.4028/www.scientific.net/ssp.189.209" @default.
- W2017185323 hasPublicationYear "2012" @default.
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