Grain boundaries and growth kinetics of polycrystalline ferrimagnetic oxides with chemical additives

Yong S. Cho, David T. Hoelzer, Vernon L. Burdick, Vasantha R.W. Amarakoon

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

Small amounts of additives of MnO2 and SiO2 derived by a sol-gel reaction caused two ferrimagnetic materials, Y2Gd1Fe5O12 and Li0.3Zn0.4Fe2.3O4 to have different microstructural characteristics. The chemical additives were thought to act as a grain growth inhibitor by segregating Si-rich precipitates along the grain boundaries in the case of Y2Gd1Fe5O12, whereas the same additives were proven to assist grain growth by forming a Si- and Fe-rich glassy phase at the grain boundaries for Li0.3Zn0.4Fe2.3O4. Quantitative analysis regarding the behavior of grain growth supported the observed microstructural changes.

Original languageEnglish
Pages (from-to)5220-5222
Number of pages3
JournalJournal of Applied Physics
Volume85
Issue number8 II A
Publication statusPublished - 1999 Apr 15
EventProceedings of the 43rd Annual Conference on Magnetism and Magnetic Materials - Miami, FL, USA
Duration: 1998 Nov 91998 Nov 12

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Cho, Y. S., Hoelzer, D. T., Burdick, V. L., & Amarakoon, V. R. W. (1999). Grain boundaries and growth kinetics of polycrystalline ferrimagnetic oxides with chemical additives. Journal of Applied Physics, 85(8 II A), 5220-5222.