Wide scope is available to study these aspects of ferrite which at present to our knowledge was not probe by researchers. In relevance to the ever expanding possibilities, and potential that is available with the ferrite materials, the scope of presently undertaken work is designed carefully by selecting suitable ferrite and dopants. A sincere attempt was made to extract fruitful, exhaustive and, systematic information regarding structural, cation distribution, electrical, dielectric and magnetic aspects of the ferrite systems under investigations.
In the present study, the properties of nickel ferrites substituted by diamagnetic Zn2+, non-magnetic trivalent In3+ ions and tetravalent Ce4+ ions are studied for various compositions. The properties are investigated with a view to understand the effect of divalent, trivalent and tetravalent substitution in nickel ferrite.
The thesis consists of five chapters. Chapter 1 related to Scope, problem statement, theory of magnetism, ferrites, background, motivation and aim of the present work, properties of the samples under investigations, objective and outline of thesis. Chapter 2, 3 and 4 related to results and discussion of structural, electrical and magnetic properties of Ni1-xZnxFe2O4, NiInxFe2-xO4 and Ni1-2xCexFe2O4 ferrite system respectively. Chapter 5 gives the summary, discussion and conclusion on Zn, In and Ce substituted nickel ferrite.
On summarizing the results obtained on Ni-Zn, Ni-In and Ni-Ce spinel ferrites it can be concluded that;
• The structural properties are found to be varying in all the three systems. The lattice parameter of Ni ferrite systems increases with increasing valancy of dopants (Zn2+, In3+ and Ce4+).
• The other prominent parameter of our structural study i.e. porosity reflects that with tetravalent substitution minimum porosity can be achieved.
• The particle size does not show any significant difference in their values when substituted with Zn2+, In3+ and Ce4+.
• The band frequency in IR spectra slightly changes with the substitution of Zn2+, In3+ and Ce4+.
• The magnetic properties are very much affected as can be seen from the values of saturation magnetization of Zn2+, In3+ and Ce4+ substituted nickel ferrite.
Table of Contents
- Acknowledgement
- Declaration
- Certificate
Objectives and Key Themes
The objective of this thesis is to prepare, characterize, and investigate the electrical and magnetic properties of certain ferrites. The research aims to contribute to the understanding of these materials and their potential applications.
- Preparation of ferrite materials
- Characterization techniques for ferrites
- Electrical properties of ferrites
- Magnetic properties of ferrites
- Analysis and interpretation of experimental results
Chapter Summaries
Acknowledgement: This section expresses gratitude to numerous individuals who provided guidance, support, and encouragement throughout the research process, including the research guide, professors, colleagues, and family. The acknowledgements highlight the significant contributions of various individuals in shaping the research and fostering a supportive environment for the completion of the doctoral study.
Declaration: This section formally declares that the research work presented in the thesis is original and has not been submitted for any other degree or diploma. It affirms the originality of the research to the best of the author's knowledge, complying with academic integrity standards.
Certificate: This section serves as an official certification, attesting to the originality of the research work and confirming that the research was conducted under the guidance of Prof. (Dr.) K.M. Jadhav. It verifies that the thesis has not been submitted elsewhere for any degree or diploma.
Keywords
Ferrites, electrical properties, magnetic properties, characterization, material science, experimental research.
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What are the main objectives and key themes of the research?
The main objective is to prepare, characterize, and investigate the electrical and magnetic properties of certain ferrites. Key themes include the preparation of ferrite materials, characterization techniques, electrical properties, magnetic properties, and the analysis of experimental results.
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The Chapter Summaries section briefly describes the content of the Acknowledgement, Declaration, and Certificate sections. The Acknowledgement expresses gratitude to individuals involved in the research. The Declaration affirms the originality of the work. The Certificate attests to the originality and confirms the research guidance.
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The keywords are: Ferrites, electrical properties, magnetic properties, characterization, material science, and experimental research.
What is the overall focus of the research?
The research focuses on the understanding of the electrical and magnetic properties of ferrites and their potential applications.
What types of materials are being studied?
The research focuses on ferrite materials.
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The research involves experimental research and analysis and interpretation of the results.
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- Arbeit zitieren
- Sagar Shirsath (Autor:in), 2010, Preparation, characterization and investigations of electrical and magnetic properties of some ferrites, München, GRIN Verlag, https://www.grin.com/document/176418
