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Influence of precursor and salt assisted calcination on magnetic properties of Sr-ferrites

  • Junfeng ZhaoEmail author
  • Chenglong LeiEmail author
  • Youwei Du
Article

Abstract

Hexagonal Sr-ferrites were synthesized via salt assisted spray drying method to control the agglomeration and grain growth of particles. The effect of precursor solution on crystalline growth, morphology and magnetic properties have been investigated. The particles size was of nano to submicron scale and non-agglomerated in NaCl salt matrix. The dispersibility and solvent inductivity of salt matrix in the different annealing temperature control the crystalline growth. The Sr-ferrites prepared from sol solution annealing at 750 °C demonstrate a coercivity of 6042 Oe and magnetization of 47.3 emu/g. The optimum magnetic properties prepared via no-treatment precursor solution and subsequent molten salt assisted annealing at 850 °C show a coercivity of 5927 Oe and magnetization of 57.6 emu/g. This will possibly enable a large scale to generate Sr-ferrites for a wide-range application via controlling precursor solution and annealing process.

Notes

Acknowledgements

The authors acknowledge the financial support from the National Natural Science Foundation of China under No. 51801097, the Industrial Innovation of Applied Fundamental Research under No. GY12016053 and the Fundamental Research Funds for the Central Universities.

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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Chemistry and Materials EngineeringChangshu Institute of TechnologyJiangsuPeople’s Republic of China
  2. 2.College of Engineering and Applied Science, Department of PhysicsInstitute of Materials Engineering, Nanjing UniversityJiangsuPeople’s Republic of China
  3. 3.Haian Institute of High-Tech Research, Nanjing UniversityJiangsuPeople’s Republic of China

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