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

Yong Soo 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

Fingerprint

grain boundaries
oxides
kinetics
ferrimagnetic materials
inhibitors
quantitative analysis
precipitates
gels

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

Cite this

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.
Cho, Yong Soo ; Hoelzer, David T. ; Burdick, Vernon L. ; Amarakoon, Vasantha R W. / Grain boundaries and growth kinetics of polycrystalline ferrimagnetic oxides with chemical additives. In: Journal of Applied Physics. 1999 ; Vol. 85, No. 8 II A. pp. 5220-5222.
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Cho, YS, Hoelzer, DT, Burdick, VL & Amarakoon, VRW 1999, 'Grain boundaries and growth kinetics of polycrystalline ferrimagnetic oxides with chemical additives', Journal of Applied Physics, vol. 85, no. 8 II A, pp. 5220-5222.

Grain boundaries and growth kinetics of polycrystalline ferrimagnetic oxides with chemical additives. / Cho, Yong Soo; Hoelzer, David T.; Burdick, Vernon L.; Amarakoon, Vasantha R W.

In: Journal of Applied Physics, Vol. 85, No. 8 II A, 15.04.1999, p. 5220-5222.

Research output: Contribution to journalConference article

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AU - Hoelzer, David T.

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AB - 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.

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