Investigation of misfit dislocations at the Fe₂O₃/Al₂2O₃ interface

Saravanamuthu Maheswaran; Suntharampillai Thevuthasan; Fei Gao; Vaithiyalingam Shutthanandan; C. M. Wang

Investigation of misfit dislocations at the Fe₂O₃/Al₂2O₃ interface

Saravanamuthu Maheswaran, Suntharampillai Thevuthasan, Fei Gao, Vaithiyalingam Shutthanandan, C. M. Wang

Research output: Chapter in Book / Conference Paper › Conference Paper

Abstract

Recent studies of buried interface α-Fe2O3(0001)/α-Al2O3 using high resolution transmission electron microscopy (HRTEM) and ion scattering techniques reveal the existence of disordering at the interface due to the misfit dislocations. Molecular dynamics (MD) calculations were carried out to understand the formation of misfit dislocations and the interface structural features. The misfit dislocations are formed because of the lattice mismatch between the substrate and the film. Ion scattering simulations were carried out using VEGAS code, in which the atomic positions generated by the MD calculations were used. The hitting probabilities determined from these simulations were compared with the experimental surface and interface peaks obtained from the aligned RBS spectrum.

Original language	English
Title of host publication	16th National Congress of the Australian Institute of Physics: Physics for the Nation : Manning Clark Centre, Australian National University of Canberra, Sunday 30 January to Friday 4 February 2005: Congress Handbook and Abstracts
Publisher	Australian National University
Number of pages	4
ISBN (Print)	0959806482
Publication status	Published - 2005
Event	Australian Institute of Physics. National Congress - Duration: 30 Nov 2008 → …

Conference

Conference	Australian Institute of Physics. National Congress
Period	30/11/08 → …

Keywords

oxides
ions
scattering
misfit dislocations
transmission electron microscopy

Cite this

Maheswaran, S., Thevuthasan, S., Gao, F., Shutthanandan, V., & Wang, C. M. (2005). Investigation of misfit dislocations at the Fe₂O₃/Al₂2O₃ interface. In 16th National Congress of the Australian Institute of Physics: Physics for the Nation : Manning Clark Centre, Australian National University of Canberra, Sunday 30 January to Friday 4 February 2005: Congress Handbook and Abstracts Australian National University.

Maheswaran, Saravanamuthu ; Thevuthasan, Suntharampillai ; Gao, Fei et al. / Investigation of misfit dislocations at the Fe₂O₃/Al₂2O₃ interface. 16th National Congress of the Australian Institute of Physics: Physics for the Nation : Manning Clark Centre, Australian National University of Canberra, Sunday 30 January to Friday 4 February 2005: Congress Handbook and Abstracts. Australian National University, 2005.

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title = "Investigation of misfit dislocations at the Fe₂O₃/Al₂2O₃ interface",

abstract = "Recent studies of buried interface α-Fe2O3(0001)/α-Al2O3 using high resolution transmission electron microscopy (HRTEM) and ion scattering techniques reveal the existence of disordering at the interface due to the misfit dislocations. Molecular dynamics (MD) calculations were carried out to understand the formation of misfit dislocations and the interface structural features. The misfit dislocations are formed because of the lattice mismatch between the substrate and the film. Ion scattering simulations were carried out using VEGAS code, in which the atomic positions generated by the MD calculations were used. The hitting probabilities determined from these simulations were compared with the experimental surface and interface peaks obtained from the aligned RBS spectrum.",

keywords = "oxides, ions, scattering, misfit dislocations, transmission electron microscopy",

author = "Saravanamuthu Maheswaran and Suntharampillai Thevuthasan and Fei Gao and Vaithiyalingam Shutthanandan and Wang, {C. M.}",

year = "2005",

language = "English",

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booktitle = "16th National Congress of the Australian Institute of Physics: Physics for the Nation : Manning Clark Centre, Australian National University of Canberra, Sunday 30 January to Friday 4 February 2005: Congress Handbook and Abstracts",

publisher = "Australian National University",

note = "Australian Institute of Physics. National Congress ; Conference date: 30-11-2008",

}

Maheswaran, S, Thevuthasan, S, Gao, F, Shutthanandan, V & Wang, CM 2005, Investigation of misfit dislocations at the Fe₂O₃/Al₂2O₃ interface. in 16th National Congress of the Australian Institute of Physics: Physics for the Nation : Manning Clark Centre, Australian National University of Canberra, Sunday 30 January to Friday 4 February 2005: Congress Handbook and Abstracts. Australian National University, Australian Institute of Physics. National Congress, 30/11/08.

Investigation of misfit dislocations at the Fe₂O₃/Al₂2O₃ interface. / Maheswaran, Saravanamuthu; Thevuthasan, Suntharampillai; Gao, Fei et al.
16th National Congress of the Australian Institute of Physics: Physics for the Nation : Manning Clark Centre, Australian National University of Canberra, Sunday 30 January to Friday 4 February 2005: Congress Handbook and Abstracts. Australian National University, 2005.

Research output: Chapter in Book / Conference Paper › Conference Paper

TY - GEN

T1 - Investigation of misfit dislocations at the Fe₂O₃/Al₂2O₃ interface

AU - Maheswaran, Saravanamuthu

AU - Thevuthasan, Suntharampillai

AU - Gao, Fei

AU - Shutthanandan, Vaithiyalingam

AU - Wang, C. M.

PY - 2005

Y1 - 2005

N2 - Recent studies of buried interface α-Fe2O3(0001)/α-Al2O3 using high resolution transmission electron microscopy (HRTEM) and ion scattering techniques reveal the existence of disordering at the interface due to the misfit dislocations. Molecular dynamics (MD) calculations were carried out to understand the formation of misfit dislocations and the interface structural features. The misfit dislocations are formed because of the lattice mismatch between the substrate and the film. Ion scattering simulations were carried out using VEGAS code, in which the atomic positions generated by the MD calculations were used. The hitting probabilities determined from these simulations were compared with the experimental surface and interface peaks obtained from the aligned RBS spectrum.

AB - Recent studies of buried interface α-Fe2O3(0001)/α-Al2O3 using high resolution transmission electron microscopy (HRTEM) and ion scattering techniques reveal the existence of disordering at the interface due to the misfit dislocations. Molecular dynamics (MD) calculations were carried out to understand the formation of misfit dislocations and the interface structural features. The misfit dislocations are formed because of the lattice mismatch between the substrate and the film. Ion scattering simulations were carried out using VEGAS code, in which the atomic positions generated by the MD calculations were used. The hitting probabilities determined from these simulations were compared with the experimental surface and interface peaks obtained from the aligned RBS spectrum.

KW - oxides

KW - ions

KW - scattering

KW - misfit dislocations

KW - transmission electron microscopy

UR - http://handle.uws.edu.au:8081/1959.7/40433

M3 - Conference Paper

SN - 0959806482

BT - 16th National Congress of the Australian Institute of Physics: Physics for the Nation : Manning Clark Centre, Australian National University of Canberra, Sunday 30 January to Friday 4 February 2005: Congress Handbook and Abstracts

PB - Australian National University

T2 - Australian Institute of Physics. National Congress

Y2 - 30 November 2008

ER -

Maheswaran S, Thevuthasan S, Gao F, Shutthanandan V, Wang CM. Investigation of misfit dislocations at the Fe₂O₃/Al₂2O₃ interface. In 16th National Congress of the Australian Institute of Physics: Physics for the Nation : Manning Clark Centre, Australian National University of Canberra, Sunday 30 January to Friday 4 February 2005: Congress Handbook and Abstracts. Australian National University. 2005

Investigation of misfit dislocations at the Fe₂O₃/Al₂2O₃ interface

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