Evidence for atomic scale disorder in indium nitride from perturbed angular correlation spectroscopy
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Dogra, Rakesh; Shrestha, Santosh K; Byrne, Aidan; Ridgway, Mark C; Edge, A. Vernon; Vianden, R; Penner, J; Timmers, Heiko
Description
The crystal lattice of bulk grains and state-of-the-art films of indium nitride was investigated at the atomic scale with perturbed angular correlation spectroscopy using the 111In/Cd radioisotope probe. The probe was introduced during sample synthesis, by diffusion and by ion implantation. The mean quadrupole interaction frequency νQ ≤ 28 MHz was observed at the indium probe site in all types of indium nitride samples with broad frequency distributions. The observed small, but non-zero,...[Show more]
dc.contributor.author | Dogra, Rakesh | |
---|---|---|
dc.contributor.author | Shrestha, Santosh K | |
dc.contributor.author | Byrne, Aidan | |
dc.contributor.author | Ridgway, Mark C | |
dc.contributor.author | Edge, A. Vernon | |
dc.contributor.author | Vianden, R | |
dc.contributor.author | Penner, J | |
dc.contributor.author | Timmers, Heiko | |
dc.date.accessioned | 2015-12-13T22:46:03Z | |
dc.identifier.issn | 0953-8984 | |
dc.identifier.uri | http://hdl.handle.net/1885/80085 | |
dc.description.abstract | The crystal lattice of bulk grains and state-of-the-art films of indium nitride was investigated at the atomic scale with perturbed angular correlation spectroscopy using the 111In/Cd radioisotope probe. The probe was introduced during sample synthesis, by diffusion and by ion implantation. The mean quadrupole interaction frequency νQ ≤ 28 MHz was observed at the indium probe site in all types of indium nitride samples with broad frequency distributions. The observed small, but non-zero, asymmetry parameter indicates broken symmetry around the probe atoms. Results have been compared with theoretical calculations based on the point charge model. The consistency of the experimental results and their independence of the preparation technique suggest that the origin of the broad frequency distribution is inherent to indium nitride, indicating a high degree of disorder at the atomic scale. Due to the low dissociation temperature of indium nitride, furnace and rapid thermal annealing at atmospheric pressure reduce the lattice disorder only marginally. | |
dc.publisher | Institute of Physics Publishing | |
dc.source | Journal of Physics: Condensed Matter | |
dc.subject | Keywords: Crystal lattices; Diffusion; Natural frequencies; Radioisotopes; Spectroscopic analysis; Synthesis (chemical); bulk grains; Correlation spectroscopy; Indium compounds | |
dc.title | Evidence for atomic scale disorder in indium nitride from perturbed angular correlation spectroscopy | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.description.refereed | Yes | |
local.identifier.citationvolume | 17 | |
dc.date.issued | 2005 | |
local.identifier.absfor | 020406 - Surfaces and Structural Properties of Condensed Matter | |
local.identifier.ariespublication | MigratedxPub8415 | |
local.type.status | Published Version | |
local.contributor.affiliation | Dogra, Rakesh, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Shrestha, Santosh K, University of New South Wales, ADFA | |
local.contributor.affiliation | Byrne, Aidan, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Ridgway, Mark C, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Edge, A. Vernon, University of New South Wales, ADFA | |
local.contributor.affiliation | Vianden, R, Helmholtz Institute for Radiation and Nuclear Physics | |
local.contributor.affiliation | Penner, J, Helmholtz Institute for Radiation and Nuclear Physics | |
local.contributor.affiliation | Timmers, Heiko, University of New South Wales, ADFA | |
local.description.embargo | 2037-12-31 | |
local.bibliographicCitation.startpage | 6037 | |
local.bibliographicCitation.lastpage | 6046 | |
local.identifier.doi | 10.1088/0953-8984/17/38/009 | |
dc.date.updated | 2015-12-11T10:26:54Z | |
local.identifier.scopusID | 2-s2.0-25144462657 | |
Collections | ANU Research Publications |
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