Department Of Physics
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Item Low Loss Soft Ferrites Nanoparticles for Applications Up to S-band(Springer Science and Business Media Deutschland GmbH, 2021-10-29T00:00:00) Sharma, Sucheta; Verma, Ramesh; Singh, Mahavir; Sharma, Surender K.This chapter aims at providing a better understanding of soft ferrites and their role in ultra-high-frequency applications. In wireless communication industry trends of miniaturized, highly efficient and wide-band antenna become the new research areas of the antenna technology. Antenna miniaturization cannot be achieved by simply changing the structural design, and it is important to improve the material characteristics of antenna substrates. Furthermore, to improve the antenna efficiency, almost matched permittivity and permeability values and low magnetic as well as dielectric loss tangents are required especially at ultra-high frequency (UHF), L-band, and S-band frequency range. For efficiency improvement and miniaturization of antennas, magneto-dielectric materials have significant advantages with matching permittivity and permeability values along with sufficiently low magnetic and dielectric loss tangents. Ferrites with very high resistance have been reported as the best host materials to produce low loss magneto-dielectric materials for high-frequency antenna applications as they present moderate permeability and permittivity values. In this chapter, the emphasis is given on the soft ferrites Mn�Zn, Ni�Zn spinel ferrite, and Co2Z type barium hexaferrite. The chapter also explains the effect of substitution of different dopant ions on the properties of soft ferrites. � 2021, Springer Nature Switzerland AG.Item Wet Chemical Synthesis and Processing of Nanoferrites in Terms of Their Shape, Size and Physiochemical Properties(Springer Science and Business Media Deutschland GmbH, 2021-10-29T00:00:00) Sarveena; Kumar, Gagan; Kondal, Neha; Singh, Mahavir; Sharma, Surender K.Nanoferrites are found to showcase superior and substantially distinct�properties due to the ease with which they can be synthesized and modified chemically. The nanoparticles are synthesized by various methods classified primarily into two categories: top-down and bottom-up methods. Wet chemical synthesis methods offer unlimited control over size distribution and shape of nanoparticles and provide the opportunity of scale-up for production of nanomaterials in bulks for practical application. This chapter covers sol-gel, solvothermal, co-precipitation, thermal decomposition and microwave-assisted methods for the production of nanoferrites. A variety of nanoferrites and its composites with remarkable properties can be synthesized by these methods mentioned in this chapter. � 2021, Springer Nature Switzerland AG.Item Progress in Ferrites Materials: The Past, Present, Future and Their Applications(Springer Science and Business Media Deutschland GmbH, 2021-10-29T00:00:00) Manhas, Anita; Singh, Mahavir; Hussain, Muhammad Irfan; Javed, Yasir; Sharma, Surender K.Ferrite is a magnetic substance consist essentially of an oxide of iron combined with one or more other metals such as manganese, copper, nickel, or zinc. They are being routinely utilized especially in electronic devices owing to its good magnetic properties along with high resistivity. � 2021, Springer Nature Switzerland AG.