Optimal growth and thermal stability of crystalline Be0.25Zn0.75O alloy films on Al2O3(0001)

Dae-Sung Park; A. Krupski; A. M. Sanchez; Chel-Jong Choi; Min-Su Yi; Hyun-Hwi Lee; S. R. C. McMitchell; C. F. McConville

doi:10.1063/1.4870533

Optimal growth and thermal stability of crystalline Be0.25Zn0.75O alloy films on Al₂O₃(0001)

Dae-Sung Park, A. Krupski, A. M. Sanchez, Chel-Jong Choi, Min-Su Yi, Hyun-Hwi Lee, S. R. C. McMitchell, C. F. McConville

Research output: Contribution to journal › Article › peer-review

320 Downloads (Pure)

Abstract

The influence of growth temperature on the synthesis of Be x Zn 1− x O alloy films, grown on highly-mismatched Al2O3(0001) substrates, was studied by synchrotron x-ray scattering, high-resolution transmission electron microscopy and photoluminescence measurements. A single-phase Be x Zn 1− x O alloy with a Be concentration of x = 0.25, was obtained at the growth temperature, T g = 400 °C, and verified by high-resolution transmission electron microscopy. It was found that high-temperature growth, T g ≥600 °C , caused phase separation, resulting in a random distribution of intermixed alloy phases. The inhomogeneity and structural fluctuations observed in the Be x Zn 1− x O films grown at high temperatures are attributed to a variation in Be composition and mosaic distribution via atomic displacement and strain relaxation.

Original language	English
Journal	Applied Physics Letters
Volume	104
Issue number	14
DOIs	https://doi.org/10.1063/1.4870533
Publication status	Published - 7 Apr 2014

Access to Document

10.1063/1.4870533

2014_40_Appl. Phys. Lett. 104 (2014) 141902Accepted author manuscript (Post-print), 1.64 MB

Cite this

@article{f5b71dff1b294f2c819f53b605ef8fb5,

title = "Optimal growth and thermal stability of crystalline Be0.25Zn0.75O alloy films on Al2O3(0001)",

abstract = "The influence of growth temperature on the synthesis of Be x Zn 1− x O alloy films, grown on highly-mismatched Al2O3(0001) substrates, was studied by synchrotron x-ray scattering, high-resolution transmission electron microscopy and photoluminescence measurements. A single-phase Be x Zn 1− x O alloy with a Be concentration of x = 0.25, was obtained at the growth temperature, T g = 400 °C, and verified by high-resolution transmission electron microscopy. It was found that high-temperature growth, T g ≥600 °C , caused phase separation, resulting in a random distribution of intermixed alloy phases. The inhomogeneity and structural fluctuations observed in the Be x Zn 1− x O films grown at high temperatures are attributed to a variation in Be composition and mosaic distribution via atomic displacement and strain relaxation.",

author = "Dae-Sung Park and A. Krupski and Sanchez, {A. M.} and Chel-Jong Choi and Min-Su Yi and Hyun-Hwi Lee and McMitchell, {S. R. C.} and McConville, {C. F.}",

year = "2014",

month = apr,

day = "7",

doi = "10.1063/1.4870533",

language = "English",

volume = "104",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "14",

}

TY - JOUR

T1 - Optimal growth and thermal stability of crystalline Be0.25Zn0.75O alloy films on Al2O3(0001)

AU - Park, Dae-Sung

AU - Krupski, A.

AU - Sanchez, A. M.

AU - Choi, Chel-Jong

AU - Yi, Min-Su

AU - Lee, Hyun-Hwi

AU - McMitchell, S. R. C.

AU - McConville, C. F.

PY - 2014/4/7

Y1 - 2014/4/7

N2 - The influence of growth temperature on the synthesis of Be x Zn 1− x O alloy films, grown on highly-mismatched Al2O3(0001) substrates, was studied by synchrotron x-ray scattering, high-resolution transmission electron microscopy and photoluminescence measurements. A single-phase Be x Zn 1− x O alloy with a Be concentration of x = 0.25, was obtained at the growth temperature, T g = 400 °C, and verified by high-resolution transmission electron microscopy. It was found that high-temperature growth, T g ≥600 °C , caused phase separation, resulting in a random distribution of intermixed alloy phases. The inhomogeneity and structural fluctuations observed in the Be x Zn 1− x O films grown at high temperatures are attributed to a variation in Be composition and mosaic distribution via atomic displacement and strain relaxation.

AB - The influence of growth temperature on the synthesis of Be x Zn 1− x O alloy films, grown on highly-mismatched Al2O3(0001) substrates, was studied by synchrotron x-ray scattering, high-resolution transmission electron microscopy and photoluminescence measurements. A single-phase Be x Zn 1− x O alloy with a Be concentration of x = 0.25, was obtained at the growth temperature, T g = 400 °C, and verified by high-resolution transmission electron microscopy. It was found that high-temperature growth, T g ≥600 °C , caused phase separation, resulting in a random distribution of intermixed alloy phases. The inhomogeneity and structural fluctuations observed in the Be x Zn 1− x O films grown at high temperatures are attributed to a variation in Be composition and mosaic distribution via atomic displacement and strain relaxation.

U2 - 10.1063/1.4870533

DO - 10.1063/1.4870533

M3 - Article

SN - 0003-6951

VL - 104

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 14

ER -

Optimal growth and thermal stability of crystalline Be0.25Zn0.75O alloy films on Al2O3(0001)

Abstract

Access to Document

Fingerprint

Cite this

Optimal growth and thermal stability of crystalline Be0.25Zn0.75O alloy films on Al₂O₃(0001)