http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Lee, Joonhyuk,Ahn, Eunyoung,Seo, Yu-Seong,Kim, Younghak,Kim, Jae-Young,Hwang, Jungseek,Jang, Yunhyeong,Cho, Jinhyung,Lee, June Hyuk,Jeen, Hyoungjeen Elsevier 2017 Current Applied Physics Vol.17 No.5
<P>Controlling oxygen contents is an easy way to tune physical properties in the transition metal oxides. In particular, Fe and/or Co containing oxides are often found to show different electronic states with different valence states by the method. In this report, we synthesized oxygen-deficient SrFe0.8Co0.2O3-delta thin films on (001) (LaAlO3)(0.3)-(SrAl0.5Ta0.5O3)(0.7) substrates by pulsed laser deposition and observed the modification of its electronic state by facile low temperature oxidative annealing. As a result of simple oxidative annealing, we achieved a huge decrease of the lattice constant, reduction in electric resistivity, an increase of the valence states of both Co and Fe, and an increase of hybridization between oxygen and transition metal ions without losing the crystallinity. (C) 2016 Elsevier B.V. All rights reserved.</P>
Growth of electronically distinct manganite thin films by modulating cation stoichiometry
Ryu, Sangkyun,Lee, Joonhyuk,Ahn, Eunyoung,Kim, Jiwoong,Herklotz, Andreas,Bae, Jong-Seong,Lee, Ho Nyung,Kim, Younghak,Kim, Jae-Young,Jeon, Tae-Yeol,Cho, Jinhyung,Park, Sungkyun,Jeen, Hyoungjeen American Institute of Physics 2017 APPLIED PHYSICS LETTERS Vol.110 No.26
Effect of thermal annealing on nitrogen implanted epitaxial Fe films
Kong Hyeonjun,Kim Gowoon,Lee Joonhyuk,Cho Jinhyung,Jeen Hyoungjeen 한국물리학회 2021 Current Applied Physics Vol.24 No.-
Nitridated iron is a promising material for potential applications in permanent magnets. Recent work on stabilization of nitridated iron in a foil form through nitrogen ion implantation and annealing motivates to study effect of thermal annealing on the surface of nitrogen-implanted iron. In this work, we show effect of annealing on chemical state and magnetism of nitrogen implanted epitaxial iron films. It is observed that nitrogen in the lattices only stays at the lower temperatures than 450 ◦C. In addition, significant reduction and lattice modification are taken placed, when the film is annealed at 450 ◦C. The increases of saturation magnetization and coercivity, where it is annealed at 450 ◦C, are likely to be triggered by reduction of oxygen contents at the surface and thinning of Fe2O3.