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Chang Won Ahn
Chang Won Ahn
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Lead-free piezoceramics–Where to move on?
CH Hong, HP Kim, BY Choi, HS Han, JS Son, CW Ahn, W Jo
Journal of Materiomics 2 (1), 1-24, 2016
3872016
Large electric-field-induced strain in Zr-modified lead-free Bi 0.5 (Na 0.78 K 0.22) 0.5 TiO 3 piezoelectric ceramics
A Hussain, CW Ahn, JS Lee, A Ullah, IW Kim
Sensors and Actuators A: Physical 158 (1), 84-89, 2010
2212010
Giant strain in Nb-doped Bi0. 5 (Na0. 82K0. 18) 0.5 TiO3 lead-free electromechanical ceramics
KN Pham, A Hussain, CW Ahn, WK Ill, SJ Jeong, JS Lee
Materials Letters 64 (20), 2219-2222, 2010
2202010
Robust nanogenerators based on graft copolymers via control of dielectrics for remarkable output power enhancement
JW Lee, HJ Cho, J Chun, KN Kim, S Kim, CW Ahn, IW Kim, JY Kim, ...
Science advances 3 (5), e1602902, 2017
2012017
Antiferroelectric Thin-Film Capacitors with High Energy-Storage Densities, Low Energy Losses, and Fast Discharge Times
CW Ahn, G Amarsanaa, SS Won, SA Chae, DS Lee, IW Kim
ACS applied materials & interfaces 7 (48), 26381-26386, 2015
1862015
Incipient piezoelectrics and electrostriction behavior in Sn-doped Bi1/2(Na0.82K0.18)1/2TiO3 lead-free ceramics
HS Han, W Jo, JK Kang, CW Ahn, I Won Kim, KK Ahn, JS Lee
Journal of Applied Physics 113 (15), 154102, 2013
1812013
Characterization and rietveld refinement of a-site deficient lanthanum doped barium titanate
M Ganguly, SK Rout, TP Sinha, SK Sharma, HY Park, CW Ahn, IW Kim
Journal of Alloys and Compounds 579, 473-484, 2013
1562013
A brief review on relaxor ferroelectrics and selected issues in lead-free relaxors
CW Ahn, CH Hong, BY Choi, HP Kim, HS Han, Y Hwang, W Jo, K Wang, ...
Journal of the Korean Physical Society 68, 1481-1494, 2016
1412016
Electric-field-induced phase transition and large strain in lead-free Nb-doped BNKT-BST ceramics
A Ullah, RA Malik, A Ullah, DS Lee, SJ Jeong, JS Lee, IW Kim, CW Ahn
Journal of the European Ceramic Society 34 (1), 29-35, 2014
1312014
The effect of K and Na excess on the ferroelectric and piezoelectric properties of K0. 5Na0. 5NbO3 thin films
CW Ahn, SY Lee, HJ Lee, A Ullah, JS Bae, ED Jeong, JS Choi, BH Park, ...
Journal of Physics D: Applied Physics 42 (21), 215304, 2009
1212009
Temperature‐Insensitive High Strain in Lead‐Free Bi0. 5 (Na0. 84K0. 16) 0.5 TiO3–0.04 SrTiO3 Ceramics for Actuator Applications
RA Malik, A Hussain, A Maqbool, A Zaman, CW Ahn, JU Rahman, ...
Journal of the American Ceramic Society 98 (12), 3842-3848, 2015
1192015
Phase Transition, Electrical Properties, and Temperature‐Insensitive Large Strain in BiAlO3‐Modified Bi0. 5 (Na0. 75K0. 25) 0.5 TiO3 Lead‐Free Piezoelectric Ceramics
A Ullah, CW Ahn, A Hussain, SY Lee, IW Kim
Journal of the American Ceramic Society 94 (11), 3915-3921, 2011
1102011
Low-frequency dielectric relaxation and ac conduction of SrBi2Ta2O9 thin film grown by pulsed laser deposition
IW Kim, CW Ahn, JS Kim, TK Song, JS Bae, BC Choi, JH Jeong, JS Lee
Applied physics letters 80 (21), 4006-4008, 2002
1082002
High strain in lead-free Nb-doped Bi1/2 (Na0. 84K0. 16) 1/2TiO3–SrTiO3 incipient piezoelectric ceramics
RA Malik, JK Kang, A Hussain, CW Ahn, HS Han, JS Lee
Applied Physics Express 7 (6), 061502, 2014
952014
Silk fibroin-based biodegradable piezoelectric composite nanogenerators using lead-free ferroelectric nanoparticles
KN Kim, J Chun, SA Chae, CW Ahn, IW Kim, SW Kim, ZL Wang, JM Baik
Nano Energy 14, 87-94, 2015
892015
Phase transitions and large electric field-induced strain in BiAlO 3-modified Bi 0.5 (Na, K) 0.5 TiO 3 lead-free piezoelectric ceramics
A Ullah, CW Ahn, A Hussain, SY Lee, HJ Lee, IW Kim
Current Applied Physics 10 (4), 1174-1181, 2010
862010
Flexible Pb (Zr0. 52Ti0. 48) O3 Films for a Hybrid Piezoelectric-Pyroelectric Nanogenerator under Harsh Environments
YJ Ko, DY Kim, SS Won, CW Ahn, IW Kim, AI Kingon, SH Kim, JH Ko, ...
ACS applied materials & interfaces 8 (10), 6504-6511, 2016
812016
Effects of Hafnium Substitution on Dielectric and Electromechanical Properties of Lead-Free Bi0. 5 (Na0. 78K0. 22) 0.5 (Ti1-xHfx) O3 Ceramics
A Hussain, CW Ahn, A Ullah, JS Lee, IW Kim
Japanese Journal of Applied Physics 49 (4R), 041504, 2010
792010
Ferroelectric and piezoelectric properties of thin films prepared by radio frequency magnetron sputtering
HJ Lee, IW Kim, JS Kim, CW Ahn, BH Park
Applied Physics Letters 94 (9), 092902, 2009
782009
Large strain under a low electric field in lead-free bismuth-based piezoelectrics
A Ullah, C Won Ahn, A Ullah, I Won Kim
Applied Physics Letters 103 (2), 022906, 2013
752013
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