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Dive into the research topics where Maeng-Joon Jung is active.

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Featured researches published by Maeng-Joon Jung.


Materials Letters | 2003

Structural refinement of SnO2 thin film prepared by plasma-enhanced chemical vapor deposition

Yong-Il Kim; Seung Hoon Nahm; Maeng-Joon Jung

Abstract The structural refinement of SnO 2 thin film prepared by PECVD was performed by the Rietveld method using X-ray diffraction data. The agreement between calculated and observed patterns was not satisfactory, which was attributed to the preferred orientation effect. The effect of preferred orientation was corrected by three kinds of approaches: a March–Dollase function, a pole density distribution using an inverse pole figure and a generalized spherical harmonic function. Of these methods, the approach using the generalized spherical harmonic function was the most effective than the other two approaches. The final residual weighted R -factor, R wp , was converged 7.92%. The lattice parameters were a = b =4.7357(2) and c =3.1937(2). Other structural parameters were well in accordance with those of SnO 2 powder.


Materials Letters | 2002

Rietveld refinement of highly textured copper sheet using pole density distribution

Yong-Il Kim; Maeng-Joon Jung; Sung-Oong Kang

Abstract The Rietveld refinement for the highly textured copper (Cu) sheet, which was prepared by a cold rolling process, was carried out by both the X-ray diffraction data of the normal direction in the sample orientation and the pole figure data of three reflections: (111), (200) and (220). The agreement between calculated and observed patterns was not satisfactory due to the textured effect of the copper sheet. The Rietveld refinement for the copper sheet could be done successfully by applying the pole density of each reflection obtained from the corresponding inverse pole figure to the X-ray diffraction data for the normal direction. The final R -weighted pattern, R wp , was 12.99% and the goodness-of-fit indicator, S , was 3.68. This approach, based on the pole density distribution of each reflection, may be an alternative technique to do the Rietveld refinement for strongly textured polycrystalline samples where simple or semiempirical functions do not sufficiently describe the textured effect.


Materials Research Bulletin | 2001

Rietveld refinement of aluminum sheet using inverse pole figure

Yong-Il Kim; Maeng-Joon Jung; Kwang Ho Kim

Abstract The Rietveld refinement on the aluminum sheet prepared by a cold rolling process was studied using both the X-ray diffraction data of the normal direction in the sample orientation and the pole figure data of three reflections: (111), (200), and (220). The agreement between calculated and observed patterns was not satisfactory due to the preferred orientation effect of the aluminum sheet. The Rietveld refinement on the aluminum sheet could be successfully preformed by applying the pole density of each reflection obtained from the corresponding inverse pole figure to the X-ray diffraction data. The final R -weighted pattern, R wp , was 7.18%, and the goodness-of-fit indicator, S , was 1.41.


Materials Letters | 2007

Study on the growth of potassium titanate nanostructures prepared by sol-gel–calcination process

Sung-Oong Kang; Hoon-Sik Jang; Yong-Il Kim; Ki-Bok Kim; Maeng-Joon Jung


Journal of Luminescence | 2002

Combined Rietveld refinement of BaMgAl10O17:Eu2+ using X-ray and neutron powder diffraction data

Yong-Il Kim; Kwang-Bok Kim; Maeng-Joon Jung; Jong-Sung Hong


Materials Research Bulletin | 2008

Synthesis of single-crystal barium titanate nanorods transformed from potassium titanate nanostructures

Sung-Oong Kang; Hoon-Sik Jang; Ki-Bok Kim; Bae Ho Park; Maeng-Joon Jung; Yong-Il Kim


Journal of Materials Science Letters | 2002

Structural refinement of BaMgAl10O17: Eu2+ using X-ray and neutron powder diffraction

Yong-Il Kim; Sung-Oong Kang; Jung-Soo Lee; Maeng-Joon Jung; Kwang Ho Kim


Journal of Materials Science Letters | 2003

Structural study of annealed BaMgAl10O17:Eu2+ using X-ray powder diffraction data

Yong-Ii Kim; Si-Choon Moon; Sung-Oong Kang; Maeng-Joon Jung; Jong-Sung Hong


Journal of Materials Science | 2004

Structural refinement of nano BaTiO3 powder using X-ray diffraction data

Yong-Il Kim; Seung-Hoon Nahm; Maeng-Joon Jung


Materials Letters | 2003

Structural refinement of SnO 2 thin film prepared by plasma-enhanced chemical vapor deposition

Yong-Il Kim; Seung Hoon Nahm; Maeng-Joon Jung

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Yong-Il Kim

Korea Research Institute of Standards and Science

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Sung-Oong Kang

Kyungpook National University

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Kwang Ho Kim

Pusan National University

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Hoon-Sik Jang

Korea Research Institute of Standards and Science

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Ki-Bok Kim

Korea Research Institute of Standards and Science

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Kwang-Bok Kim

Electronics and Telecommunications Research Institute

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Seung Hoon Nahm

Korea Research Institute of Standards and Science

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Yong-Ii Kim

Korea Research Institute of Standards and Science

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