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List of works by Wook Jo

A High-Temperature-Capacitor Dielectric Based on K 0.5 Na 0.5 NbO 3 -Modified Bi 1/2 Na 1/2 TiO 3 -Bi 1/2 K 1/2 TiO 3

A model delineating the dielectric spectra of a relaxor PLZT obtained by impedance analyzer

Aging in the relaxor and ferroelectric state of Fe-doped (1-x)(Bi 1/2 Na 1/2 )TiO 3 -xBaTiO 3 piezoelectric ceramics

Anisotropy of ferroelectric behavior of (1 − x)Bi 1/2 Na 1/2 TiO 3 –xBaTiO 3 single crystals across the morphotropic phase boundary

Auxetic behavior under electrical loads in an induced ferroelectric phase

Bi1/2Na1/2TiO3–BaTiO3 based thick-film capacitors for high-temperature applications

Bipolar and Unipolar Fatigue of Ferroelectric BNT-Based Lead-Free Piezoceramics

Characterization of pyramidal inversion boundaries in Sb2O3-doped ZnO by using electron back-scattered diffraction (EBSD).

scientific article published on 13 April 2007

Coexistence of ergodicity and nonergodicity in LaFeO3-modified Bi(1/2)(Na(0.78)K(0.22))(1/2)TiO3 relaxors

scientific article published on 21 August 2012

Compositional dependence of dielectric and ferroelectric properties in BiFeO3–BaTiO3 solid solutions

CuO as a sintering additive for (Bi1/2Na1/2)TiO3–BaTiO3–(K0.5Na0.5)NbO3 lead-free piezoceramics

Cyclic electric field response of morphotropic Bi 1/2 Na 1/2 TiO 3 -BaTiO 3 piezoceramics

Cycling stability of lead-free BNT–8BT and BNT–6BT–3KNN multilayer actuators and bulk ceramics

Determination of depolarization temperature of (Bi 1/2 Na 1/2 )TiO 3 -based lead-free piezoceramics

Diffused Phase Transition Boosts Thermal Stability of High-Performance Lead-Free Piezoelectrics

article published in 2016

Domain switching energies: Mechanical versus electrical loading in La-doped bismuth ferrite–lead titanate

Effect of Ferroelectric Long-Range Order on the Unipolar and Bipolar Electric Fatigue in Bi1/2Na1/2TiO3-Based Lead-Free Piezoceramics

Effect of K 0.5 Na 0.5 NbO 3 on Properties at and off the Morphotropic Phase Boundary in Bi 0.5 Na 0.5 TiO 3 –Bi 0.5 K 0.5 TiO 3 Ceramics

Effect of Nb-donor and Fe-acceptor dopants in (Bi1/2Na1/2)TiO3–BaTiO3–(K0.5Na0.5)NbO3 lead-free piezoceramics

Effect of Texture on Temperature-Dependent Properties of K0.5Na0.5NbO3Modified Bi1/2Na1/2TiO3-xBaTiO3

Effect of tetragonal distortion on ferroelectric domain switching: A case study on La-doped BiFeO3–PbTiO3 ceramics

Effect of uniaxial stress on ferroelectric behavior of (Bi1/2Na1/2)TiO3-based lead-free piezoelectric ceramics

Electric-field-induced antiferroelectric to ferroelectric phase transition in mechanically confined Pb 0.99 Nb 0.02 [ ( Zr 0.57 Sn 0.43 ) 0.94 Ti 0.06 ] 0.98 O 3

Electric-field-induced phase transformation at a lead-free morphotropic phase boundary: Case study in a 93%(Bi0.5Na0.5)TiO3–7% BaTiO3 piezoelectric ceramic

Electric-field-induced phase-change behavior in (Bi0.5Na0.5)TiO3–BaTiO3–(K0.5Na0.5)NbO3: A combinatorial investigation

Electric-field-induced polarization and strain in 0.94(Bi1/2Na1/2)TiO3–0.06BaTiO3 under uniaxial stress

Electric-field-induced strain mechanisms in lead-free 94%(Bi1/2Na1/2)TiO3–6%BaTiO3

Electric-field-induced volume change and room temperature phase stability of (Bi 1/2 Na 1/2 )TiO 3 - x mol. % BaTiO 3 piezoceramics

Electric-field–temperature phase diagram of the ferroelectric relaxor system (1 −  x )Bi 1/2 Na 1/2 TiO 3  − xBaTiO 3 doped with manganese

Enhanced bipolar fatigue resistance in CaZrO 3 -modified (K,Na)NbO 3 lead-free piezoceramics

Ergodicity reflected in macroscopic and microscopic field-dependent behavior of BNT-based relaxors

article

Erratum: “Tailoring of unipolar strain in lead-free piezoelectrics using the ceramic/ceramic composite approach” [J. Appl. Phys. 115 , 124108 (2014)]

Evolving morphotropic phase boundary in lead-free (Bi1/2Na1/2)TiO3–BaTiO3 piezoceramics

Fatigue-free unipolar strain behavior in CaZrO 3 and MnO 2 co-modified (K,Na)NbO 3 -based lead-free piezoceramics

Frequency and temperature dependence of actuating performance of Bi 1/2 Na 1/2 TiO 3 -BaTiO 3 based relaxor/ferroelectric composites

Frequency-dependence of large-signal properties in lead-free piezoceramics

Giant electric-field-induced strains in lead-free ceramics for actuator applications – status and perspective

Giant electrocaloric materials energy efficiency in highly ordered lead scandium tantalate

Giant strain and compling effects of relaxor/ferroelectric lead-free composite piezoceramics

Hardening behavior and highly enhanced mechanical quality factor in (K 0.5 Na 0.5 )NbO 3 –based ceramics

Heterogeneous grain-scale response in ferroic polycrystals under electric field.

scientific article published on 9 March 2016

High temperature stress-induced “double loop-like” phase transitions in Bi-based perovskites

High-Energy Synchrotron X-Ray Diffraction for In Situ Diffuse Scattering Studies of Bulk Single Crystals

High-Frequency EPR Analysis of MnO2-Doped [Bi0.5Na0.5]TiO3-BaTiO3Piezoelectric Ceramics – Manganese Oxidation States and Materials ‘Hardening’

High-Strain Lead-free Antiferroelectric Electrostrictors

High-temperature dielectrics in CaZrO3-modified Bi1/2Na1/2TiO3-based lead-free ceramics

Impedance Spectroscopy of (Bi1/2Na1/2)TiO3-BaTiO3Based High-Temperature Dielectrics

Impedance Spectroscopy of (Bi1/2Na1/2)TiO3-BaTiO3Ceramics Modified with (K0.5Na0.5)NbO3

In Situ Transmission Electron Microscopy of Electric Field-Triggered Reversible Domain Formation in Bi-Based Lead-Free Piezoceramics

Incorporation of cobalt ions into magnetoelectric gallium ferrite epitaxial films: tuning of conductivity and magnetization

scholarly article by S. H. Oh et al published 2015 in RSC Advances

Influence of electric fields on the depolarization temperature of Mn-doped (1-x)Bi 1/2 Na 1/2 TiO 3 -xBaTiO 3

Investigation of the depolarisation transition in Bi-based relaxor ferroelectrics

Large Strain in Relaxor/Ferroelectric Composite Lead-Free Piezoceramics

Large blocking force in Bi1/2Na1/2TiO3-based lead-free piezoceramics

Large nonlinear optical response of polycrystalline Bi3.25La0.75Ti3O12 ferroelectric thin films on quartz substrates

scientific article

Lead-free electrostrictive bismuth perovskite ceramics with thermally stable field-induced strains

Lead-free high-temperature dielectrics with wide operational range

Less than mm2 macrosymmetry in polarized (011)-oriented relaxor-PbTiO 3 single crystals reflected in the face shear properties

Local structure change evidenced by temperature-dependent elastic measurements: Case study on Bi 1/2 Na 1/2 TiO 3 -based lead-free relaxor piezoceramics

Local structure of the B-site in BNT-xBT investigated by 47,49 Ti NMR: Effect of barium content

Local structure, pseudosymmetry, and phase transitions in Na 1 / 2 Bi 1 / 2 TiO 3 –K 1 / 2 Bi 1 / 2 TiO 3 ceramics

Microstructure and Electrical Properties of (1− x )Bi(Li 1/3 Zr 2/3 )O 3 - x PbTiO 3 Piezoelectric Ceramics

Modulation of magnetoelectric coupling through systematically engineered spin canting in nickel–zinc ferrite

Multiferroic properties in Fe-site engineered PbFe 1/2 Nb 1/2 O 3 with distinct antisymmetric spin interaction

Nanoscale Insight Into Lead-Free BNT-BT- x KNN

Nanoscale phase quantification in lead-free ( Bi 1 / 2 Na 1 / 2 ) TiO 3 − BaTiO 3 relaxor ferroelectrics by means of Na 23 NMR

On the phase identity and its thermal evolution of lead free (Bi1/2Na1/2)TiO3-6 mol% BaTiO3

scholarly article by Wook Jo et al published October 2011 in Journal of Applied Physics

Optimal working regime of lead–zirconate–titanate for actuation applications

Origin of the large piezoelectric activity in ( 1 − x ) Ba ( Z r 0.2 T i 0.8 ) O 3 − x ( B a 0.7 C a 0.3 ) Ti O 3 ceramics

Origin of the large strain response in (K0.5Na0.5)NbO3-modified (Bi0.5Na0.5)TiO3–BaTiO3 lead-free piezoceramics

Perspective on the Development of Lead-free Piezoceramics

Piezoelectric activity of (1-x)[0.35Bi(Mg1/2Ti1/2)O3-0.3BiFeO3-0.35BiScO3] - xPbTiO3 ceramics as a function of temperature

Polarization dynamics across the morphotropic phase boundary in Ba(Zr 0.2 Ti 0.8 )O 3 -x(Ba 0.7 Ca 0.3 )TiO 3 ferroelectrics

Quenching-induced circumvention of integrated aging effect of relaxor lead lanthanum zirconate titanate and (Bi 1/2 Na 1/2 )TiO 3 -BaTiO 3

R-Curve Behavior of Pb(Mg1/3Nb2/3)O3-29 mol% PbTiO3 Single Crystals: The Effect of Crystallographic Orientation and Grain Structure

Reconciling Local Structure Disorder and the Relaxor State in (Bi1/2Na1/2)TiO3-BaTiO3.

scientific article published on 22 August 2016

Reduced leakage currents and possible charge carriers tuning in Mg-doped Ga0.6Fe1.4O3 thin films

Relationship between electromechanical properties and phase diagram in the Ba(Zr0.2Ti0.8)O3–x(Ba0.7Ca0.3)TiO3 lead-free piezoceramic

Relaxor Characteristics of Morphotropic Phase Boundary (Bi1/2Na1/2)TiO3-(Bi1/2K1/2)TiO3 Modified with Bi(Zn1/2Ti1/2)O3

Relaxor/Ferroelectric Composites: A Solution in the Quest for Practically Viable Lead-Free Incipient Piezoceramics

Role of (Bi 1/2 K 1/2 )TiO 3 in the dielectric relaxations of BiFeO 3 -(Bi 1/2 K 1/2 )TiO 3 ceramics

Role of sodium deficiency on the relaxor properties of Bi1/2Na1/2TiO3-BaTiO3

Room temperature magnetoelectric coupling in Pb(Fe 1/2 Nb 1/2 )O 3 by counterbalancing imbalanced spin moments through spin canting

Shift in Morphotropic Phase Boundary in La-Doped BiFeO3–PbTiO3Piezoceramics

article

Stabilization of the Fatigue-Resistant Phase by CuO Addition in (Bi1/2Na1/2)TiO3-BaTiO3

Stress-dependent electromechanical properties of doped (Ba1−xCax)(ZryTi1−y)O3

Stress-induced structural changes in La-doped BiFeO3–PbTiO3 high-temperature piezoceramics

Strong pinning in very fast grown reactive co-evaporated GdBa2Cu3O7 coated conductors

article published in 2014

Structural origins of relaxor behavior in a 0.96(Bi1/2Na1/2)TiO3–0.04BaTiO3 single crystal under electric field

Structure and temperature-dependent phase transitions of lead-free Bi 1/2 Na 1/2 TiO 3 –Bi 1/2 K 1/2 TiO 3 –K 0.5 Na 0.5 NbO 3 piezoceramics

Symmetry-bridging phase as the mechanism for the large strains in relaxor-PbTiO3 single crystals

Tailoring Strain Properties of (0.94− x )Bi 1/2 Na 1/2 TiO 3 -0.06BaTiO 3 - x K 0.5 Na 0.5 NbO 3 Ferroelectric/Relaxor Composites

Tailoring ergodicity through selective A-site doping in the Bi1/2Na1/2TiO3–Bi1/2K1/2TiO3 system

scientific article published on 7 April 2015

Tailoring of unipolar strain in lead-free piezoelectrics using the ceramic/ceramic composite approach

Temperature Dependence of the Piezoelectric Coefficient in BiMeO3-PbTiO3 (Me = Fe, Sc, (Mg1/2Ti1/2)) Ceramics

Temperature Stability of Lead-Free Niobate Piezoceramics with Engineered Morphotropic Phase Boundary

Temperature dependence of piezoelectric properties of high-TC Bi(Mg1/2Ti1/2)O3–PbTiO3

Temperature dependence of the local piezoresponse in (K,Na)NbO 3 -based ceramics with large electromechanical strain

Temperature- and Frequency-Dependent Properties of the 0.75Bi 1/2 Na 1/2 TiO 3 -0.25SrTiO 3 Lead-Free Incipient Piezoceramic

Temperature-Dependent Properties of (Bi 1/2 Na 1/2 )TiO 3 -(Bi 1/2 K 1/2 )TiO 3 -SrTiO 3 Lead-Free Piezoceramics

Temperature-Insensitive (K,Na)NbO 3 -Based Lead-Free Piezoactuator Ceramics

Temperature-Insensitive Large Strain of (Bi 1/2 Na 1/2 )TiO 3 -(Bi 1/2 K 1/2 )TiO 3 -(K 0.5 Na 0.5 )NbO 3 Lead-Free Piezoceramics

Thermally stable large strain in low‐loss (Na 0.2 K 0.8 )NbO 3 ‐BaZrO 3 for multilayer actuators

Transferring lead-free piezoelectric ceramics into application

Two-stage processes of electrically induced-ferroelectric to relaxor transition in 0.94(Bi 1/2 Na 1/2 )TiO 3 -0.06BaTiO 3

Two-step polarization reversal in biased ferroelectrics

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Universal Polarization Switching Behavior of Disordered Ferroelectrics

scientific article