MeV 4He++ channeling studies of epitaxially grown Pt films on Al2O3(0001)

Song, Jee-Hun; Choi, Won Kook; Kim, K.H.; Lee, J.C.; Kim, S.C.; Kim, H.B.; Lee, M.H.; Jeong, Kyu Shik; Whang, C. N.

doi:10.1016/s0168-583x(98)00933-1

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…For the particle shown, the Al2O3 grain is aligned in the [ 2021 ] zone axis, and the Pt is aligned in the [110] zone axis. This OR is not among the set previously reported in the literature[41,45,46,47,48,49,50]. However, changes in the particle/matrix OR due to grain growth can broaden the spectrum of observed Pt/Al2O3 ORs in PCA.…”

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confidence: 48%

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Microstructural evolution in Pt-implanted polycrystalline Al2O3

et al. 2015

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Microstructural evolution in the near-surface layer of a model metal-ceramic system, Ptimplanted high-purity polycrystalline Al2O3 (PCA), was studied, and compared to that in Ptimplanted sapphire. Interactions between Pt particles and migrating ! /! grain boundaries in PCA caused Pt particle redistribution and Pt loss, and were evaluated in the context of Zenerpinning and particle-drag theories. The experimental method allows the transition from the original to the new equilibrium shape due to the changes in orientation relationship (OR) to be examined. As a result of the potentially wide range of equilibrium shapes, interface crystallographies, and transitional morphologies the microstructural evolution imposes, the experimental method provides a flexible framework for fundamental studies of the energetic and kinetic properties of ceramic-metal interfaces.

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confidence: 48%

“…The equilibrium shape of Pt in ! -Al2O3 has not been determined, however, a limited spectrum of preferred Pt-Al2O3 ORs can be deduced from thin-film experiments as well as from prior investigations of Ptimplanted sapphire [25,41,45,46,47,48,49,50,51]. [25,41,51].…”

Section: Platinum and Alumina Equilibrium Morphologiesmentioning

confidence: 99%