Synthesis of Barium (Cobalt Titanium) Hexaferrite and Measurement of it's Complex Permittivity at Microwave Frequencies in X-Band

Abstract

A number of samples of Ferrite Ba (CoTi)_yFe_(12–2y)O₁₉ where y varies from 0.0 to 1.0 in steps of 0.1 have been prepared using normal ceramic method and their complex permittivity has been meausred as a function of frequency over X-band of microwaves. These measurements have been made to find the effect of change in frequency as well as composition (due to substitution of Cobalt and Titanium in place of Iron in Bariumhexaferrite) on the complex permittivity of these ferrites. Short-circuit transmission line method has been used to make complex permittivity measurements.

Indexing terms:

• Hexaferrite
• Microwaves
• Permittivity

Additional information

Notes on contributors

Sukhleen Bindra

Sukhleen Bindra did her MSc (Physics) and MPhil from Punjabi University Patiala with first position in 1981 & 1983 respectively. She then joined Guru Nanak Dev University Amritsar in July 1983 as a Lecturer in the Department of Electronics Technology. She did her MTech (Computer Science and Technology) from University of Roorkee in 1993. Mrs Sukhleen Bindra is now a Reader and Head of the Electronics Technology Department, Guru Nanak Dev University Amritsar. She has published/presented several research papers in research journals/conferences. Her research interests are in the field of mocrowave materials, ferrites, communication and neural networks.

I S Hudiara

I S Hudiara, did his BE from Panjab University and obtained his MS (Microwaves & Quantum Electronics) from University College London, University of London on British Council Fellowship. He was then offered University Research Fellowship by University of Bradford from where he obtained his PhD. Dr Hudiara then joined University of Surrey (Guildford) England as a Post Doctoral Research Fellow. He worked on injection locking of high efficiency microwave oscillators. Later he joined Marconi Company as senior Design and development engineer where he worked on high frequency transistor oscillator and overaly stripline directional couplers. On returning to India, Dr Hudiara joined IIT Delhi. After having a short stint at IIT, he joined Department of Electronics Technology of Guru Nanak Dev University, Amritsar where he is now professor. Dr Hudiara has several publications in National and International journals. His biographical sketch has been included in the latest edition of Marquis Who is Who in the world. His research interests are in the field of Microwave Solid State Devices, Microwave and Optical Communications Systems and Microwave Ferrites. Dr Hudiara and his research team is currently working on a research project “Rain Attenuation Studies at 20 and 30 GHz”.

V K Babbar

V K Babbar did his MSc Physics from Department of Physics, GND University Amritsar in 1983 and after that PhD from Indian Institute of Technology New Delhi. Since then, he has been working as lecturer in the Department of Applied Physics, GND University Amritsar. He has published several papers in various National/International journals. His research interests are study of Spinel Ferrites and Mocrowave Ferrites.