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Chang Won Ahn
Chang Won Ahn
Verified email at ulsan.ac.kr
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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
3412016
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
2202010
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
2052010
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
1702013
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
1592015
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
1582017
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
1462013
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
1242014
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 (12), 1481-1494, 2016
1162016
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
1162009
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
1072002
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
1062011
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
1012015
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
902010
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
842015
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
842014
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
832010
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
772009
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
722016
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
702013
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