• 산업기술연구
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• 제42권1호
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• pp.19-27
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• 2022

This review will discuss the effort to understand the interfacial reactions at the anode and cathode sides of all-solid-state batteries. Antiperovskite solid electrolytes have received increasing attention due to their low melting points and anion tunability which allow controlling microstructure and crystallographic structures of this material system. Antiperovskite solid electrolytes pave the way for the understanding relationship between critical current density and mechanical properties of solid electrolytes. Microstructure engineering of cathode materials has been introduced to mitigate the volume change of cathode materials in solid-state batteries. The hollow microstructure coupled with a robust outer oxide layer effectively mitigates both volume change and stress level of cathode materials induced by lithium insertion and extraction, thus improving the structural stability of the cathode and outer oxide layer, which results in stable cycling performance of all-solid-state batteries.

• 한국초전도학회:학술대회논문집
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• 한국초전도학회 2002년도 High Temperature Superconductivity Vol.XII
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• pp.7-7
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• 2002

• 한국자기학회:학술대회 개요집
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• 한국자기학회 2012년도 임시총회 및 하계학술연구발표회
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• pp.34-35
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• 2012

• 한국초전도학회:학술대회논문집
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• 한국초전도학회 2002년도 High Temperature Superconductivity Vol.XII
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• pp.15-15
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• 2002

• Progress in Superconductivity
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• 제4권2호
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• pp.144-147
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• 2003

We investigated superconducting property of ($Mg_{1-x}$$Zn_{x}$)$CNi_3$ (x=0,0.03, 0.06, 0.09, 0.12, 0.15, and 0.18) sample where Mg is substituted with Zn. The samples were synthesized us ins the solid state reaction method under As atmosphere. X -ray diffraction spectra show that the $MgCNi_3$ structure is maintained up to x=18. With increasing x, the lattice constant (or the Ni-Ni distance) decreases. Magnetic susceptibility measurement shows that $T_{c}$ decreases systematically with x and becomes ～2K at x =0.18. Surprisingly, the transition width remains sharp (～0.3K). Under some assumptions, we estimate the coupling constant in the McMillan formula as a function of x which we interpret in terms of the BCS theory.y.y.y.

• 한국자기학회지
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• 제18권3호
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• pp.85-88
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• 2008

페로브스카이트 구조를 가지는 전이금속 질화물인 $FeCo_3N$과 $NiCo_3N$의 전자구조를 전전자 총퍼텐셜선형보강평면파(all electron FLAPW) 방법에 의해 계산하고, 그 결과를 $Co_4N$의 전자구조와 비교함으로써 꼭지점에 위치한 Co 원자(CoI)를 Fe과 Ni 원자로 대치하였을 때의 영향을 탐구하였다. CoI원자를 각기 Fe와 Ni 원자로 대치한 경우에 면심위치의 CoII 원자의 자기모멘트는 1.458과 $1.494\;{\mu}_B$으로 대치하지 않은 경우와 비교하여 커다란 차이가 없었다. $FeCo_3N$과 $NiCo_3N$에서 꼭지점에 위치한 Fe와 Ni 원자의 자기모멘트는 각기 3.086과 $0.795\;{\mu}_B$로 거의 포화된 값을 가졌으며, 국소적 자성을 나타냈다.