Electron microscopy studies of microstructures in β-Ga2O3 single crystals

Encarnación G. Víllora, Yasukazu Murakami, Takasi Sugawara, Toshiyuki Atou, Masae Kikuchi, Daisuke Shindo, Tsuguo Fukuda

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Microstructures of as-grown and annealed β-Ga2O3 single crystals were studied by electron microscopy. Energy filtered electron diffraction patterns exhibited weak diffuse scattering at 1/2 and 1/4 positions between the fundamental reflections along the q204̄ vector. Dark-field images observed with the 1/2 diffuse scattering showed a characteristic domain-like structure, where the size of each domain was less than 5nm. The diffused scattering was somewhat weakened by annealing the specimen. The observations indicate a non-homogeneous structural modulation, which is considered to be related to the distribution of oxygen vacancies.

Original languageEnglish
Pages (from-to)769-774
Number of pages6
JournalMaterials Research Bulletin
Volume37
Issue number4
DOIs
Publication statusPublished - Mar 25 2002
Externally publishedYes

Fingerprint

Electron microscopy
electron microscopy
Single crystals
Scattering
microstructure
Microstructure
single crystals
scattering
Oxygen vacancies
Electron diffraction
Diffraction patterns
diffraction patterns
electron diffraction
Modulation
Annealing
modulation
annealing
oxygen
energy

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Víllora, E. G., Murakami, Y., Sugawara, T., Atou, T., Kikuchi, M., Shindo, D., & Fukuda, T. (2002). Electron microscopy studies of microstructures in β-Ga2O3 single crystals. Materials Research Bulletin, 37(4), 769-774. https://doi.org/10.1016/S0025-5408(02)00689-X

Electron microscopy studies of microstructures in β-Ga2O3 single crystals. / Víllora, Encarnación G.; Murakami, Yasukazu; Sugawara, Takasi; Atou, Toshiyuki; Kikuchi, Masae; Shindo, Daisuke; Fukuda, Tsuguo.

In: Materials Research Bulletin, Vol. 37, No. 4, 25.03.2002, p. 769-774.

Research output: Contribution to journalArticle

Víllora, EG, Murakami, Y, Sugawara, T, Atou, T, Kikuchi, M, Shindo, D & Fukuda, T 2002, 'Electron microscopy studies of microstructures in β-Ga2O3 single crystals', Materials Research Bulletin, vol. 37, no. 4, pp. 769-774. https://doi.org/10.1016/S0025-5408(02)00689-X
Víllora, Encarnación G. ; Murakami, Yasukazu ; Sugawara, Takasi ; Atou, Toshiyuki ; Kikuchi, Masae ; Shindo, Daisuke ; Fukuda, Tsuguo. / Electron microscopy studies of microstructures in β-Ga2O3 single crystals. In: Materials Research Bulletin. 2002 ; Vol. 37, No. 4. pp. 769-774.
@article{f9bee6b2fc2846309a80ca15ce2b232d,
title = "Electron microscopy studies of microstructures in β-Ga2O3 single crystals",
abstract = "Microstructures of as-grown and annealed β-Ga2O3 single crystals were studied by electron microscopy. Energy filtered electron diffraction patterns exhibited weak diffuse scattering at 1/2 and 1/4 positions between the fundamental reflections along the q204̄ vector. Dark-field images observed with the 1/2 diffuse scattering showed a characteristic domain-like structure, where the size of each domain was less than 5nm. The diffused scattering was somewhat weakened by annealing the specimen. The observations indicate a non-homogeneous structural modulation, which is considered to be related to the distribution of oxygen vacancies.",
author = "V{\'i}llora, {Encarnaci{\'o}n G.} and Yasukazu Murakami and Takasi Sugawara and Toshiyuki Atou and Masae Kikuchi and Daisuke Shindo and Tsuguo Fukuda",
year = "2002",
month = "3",
day = "25",
doi = "10.1016/S0025-5408(02)00689-X",
language = "English",
volume = "37",
pages = "769--774",
journal = "Materials Research Bulletin",
issn = "0025-5408",
publisher = "Elsevier Limited",
number = "4",

}

TY - JOUR

T1 - Electron microscopy studies of microstructures in β-Ga2O3 single crystals

AU - Víllora, Encarnación G.

AU - Murakami, Yasukazu

AU - Sugawara, Takasi

AU - Atou, Toshiyuki

AU - Kikuchi, Masae

AU - Shindo, Daisuke

AU - Fukuda, Tsuguo

PY - 2002/3/25

Y1 - 2002/3/25

N2 - Microstructures of as-grown and annealed β-Ga2O3 single crystals were studied by electron microscopy. Energy filtered electron diffraction patterns exhibited weak diffuse scattering at 1/2 and 1/4 positions between the fundamental reflections along the q204̄ vector. Dark-field images observed with the 1/2 diffuse scattering showed a characteristic domain-like structure, where the size of each domain was less than 5nm. The diffused scattering was somewhat weakened by annealing the specimen. The observations indicate a non-homogeneous structural modulation, which is considered to be related to the distribution of oxygen vacancies.

AB - Microstructures of as-grown and annealed β-Ga2O3 single crystals were studied by electron microscopy. Energy filtered electron diffraction patterns exhibited weak diffuse scattering at 1/2 and 1/4 positions between the fundamental reflections along the q204̄ vector. Dark-field images observed with the 1/2 diffuse scattering showed a characteristic domain-like structure, where the size of each domain was less than 5nm. The diffused scattering was somewhat weakened by annealing the specimen. The observations indicate a non-homogeneous structural modulation, which is considered to be related to the distribution of oxygen vacancies.

UR - http://www.scopus.com/inward/record.url?scp=0037171015&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037171015&partnerID=8YFLogxK

U2 - 10.1016/S0025-5408(02)00689-X

DO - 10.1016/S0025-5408(02)00689-X

M3 - Article

AN - SCOPUS:0037171015

VL - 37

SP - 769

EP - 774

JO - Materials Research Bulletin

JF - Materials Research Bulletin

SN - 0025-5408

IS - 4

ER -