I
I.-K. Jeong
Researcher at Pusan National University
Publications - 45
Citations - 1603
I.-K. Jeong is an academic researcher from Pusan National University. The author has contributed to research in topics: Pair distribution function & Scattering. The author has an hindex of 18, co-authored 43 publications receiving 1350 citations. Previous affiliations of I.-K. Jeong include Los Alamos National Laboratory.
Papers
More filters
Journal ArticleDOI
High-Performance Lead-Free Piezoceramics with High Curie Temperatures
Myang Hwan Lee,Da Jeong Kim,Jin Su Park,Sangwook Kim,Tae Kwon Song,Myong-Ho Kim,Won-Jeong Kim,Dalhyun Do,I.-K. Jeong +8 more
TL;DR: By adding the super-tetragonal bismuth gallium oxide to the compound, the piezoelectric properties are as good as those of lead zirconate titanate ceramics.
Journal ArticleDOI
Direct observation of the formation of polar nanoregions in Pb(Mg1/3Nb2/3)O3 using neutron pair distribution function analysis.
I.-K. Jeong,Timothy W. Darling,J. K. Lee,Th. Proffen,R. H. Heffner,Jong-Min Park,K. S. Hong,Wojtek Dmowski,Takeshi Egami +8 more
TL;DR: In this article, the authors demonstrate the existence of local polarization and the formation of medium-range, polar nanoregions with local rhombohedral order in a prototypical relaxor ferroelectric Pb(Mg(1/3)Nb(2/3))O3.
Journal ArticleDOI
Lattice dynamics and correlated atomic motion from the atomic pair distribution function
TL;DR: In this article, the effects of lattice vibrations on the PDF peak widths are modelled using both a multi-parameter Born-von Karman (BvK) force model and a single-parameters Debye model.
Journal ArticleDOI
Local lattice dynamics and the origin of the relaxor ferroelectric behavior.
Wojciech Dmowski,Sergey Vakhrushev,I.-K. Jeong,Markus P. Hehlen,Frans Trouw,Takeshi Egami,Takeshi Egami +6 more
TL;DR: The local lattice dynamics is shown as the origin of relaxor ferroelectricity through the first use of the dynamic pair-density function determined by pulsed neutron inelastic scattering.
Journal ArticleDOI
Role of the lattice in the gamma-->alpha phase transition of Ce: a high-pressure neutron and x-ray diffraction study.
I.-K. Jeong,Timothy W. Darling,Matthias J. Graf,Th. Proffen,R. H. Heffner,Yongjae Lee,Thomas Vogt,James D. Jorgensen +7 more
TL;DR: The temperature and pressure dependence of the thermal displacements and lattice parameters were obtained across the gamma-->alpha phase transition of Ce using high-pressure, high-resolution neutron and synchrotron x-ray powder diffraction to demonstrate the importance of lattice vibrations, in addition to the spin and charge degrees of freedom, for a complete description of the gamma -->alpha phase Transition in elemental Ce.