Publications de Matthew Davis | EPFL Graph Search

Uniaxial-stress induced phase transitions in [001](C)-poled 0.955Pb(Zn1/3Nb2/3)O-3-0.045PbTiO(3)

Dragan Damjanovic, Nava Setter, Brahim Dkhil, Matthew Davis

2007

Neutron diffraction study of the polarization reversal mechanism in [111](c)-oriented Pb(Zn1/3Nb2/3)O-3-xPbTiO(3)

Dragan Damjanovic, Matthew Davis

2007

Large and stable thickness coupling coefficients of [001](C)-oriented KNbO3 and Li-modified (K,Na)NbO3 single crystals

Dragan Damjanovic, Nava Setter, Matthew Davis, Naama Klein

2007

Rotator and extender ferroelectrics: Importance of the shear coefficient to the piezoelectric properties of domain-engineered crystals and ceramics

Dragan Damjanovic, Nava Setter, Marko Budimir, Matthew Davis

2007

Picturing the elephant: Giant piezoelectric activity and the monoclinic phases of relaxor-ferroelectric single crystals

Matthew Davis

Springer, Springer US; http://www.springer-ny.com2007

Electric-field-, temperature-, and stress-induced phase transitions in relaxor ferroelectric single crystals

Dragan Damjanovic, Nava Setter, Matthew Davis

Electric-field-induced phase transitions have been evidenced by macroscopic strain measurements at temperatures between 25 degrees C and 100 degrees C in 001-poled (1-x)Pb(Mg1/3Nb2/3)O-3-xPbTiO(3) [(PMN-xPT);x=0.25,0.305,0.31] and (1-x)Pb(Zn1/3Nb2/3)O ...

2006

Piezoelectric anisotropy: Enhanced piezoelectric response along nonpolar directions in perovskite crystals

Dragan Damjanovic, Nava Setter, Marko Budimir, Matthew Davis

This paper discusses the mechanisms that can contribute to the enhanced longitudinal piezoelectric effect along nonpolar directions in perovskite crystals, such as BaTiO3, PbTiO3, KNbO3, Pb(Mg1/3Nb2/3)O-3-PbTiO3 and Pb(Zn1/2Nb2/3)O-3-PbTiO3. Piezoelectric ...

Kluwer Academic Publishers, Springer2006

Phase transitions, anisotropy and domain engineering : the piezoelectric properties of relaxor-ferroelectric single crystals

Matthew Davis

Relaxor-ferroelectric single crystals PZN-xPT [(1-x)Pb(Zn1/3Nb2/3)O3-xPbTiO3] and PMN-xPT [(1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3] continue to attract much interest due to their anomalously large piezoelectric properties (d33 > 2000 pm/V; k33 > 90%) when poled ("do ...

EPFL2006

Temperature dependence of the direct piezoelectric effect in relaxor-ferroelectric single crystals: Intrinsic and extrinsic contributions

Dragan Damjanovic, Nava Setter, Matthew Davis

2006

Electric-field-induced orthorhombic to rhombohedral phase transition in [111](C)-oriented 0.92Pb(Zn1/3Nb2/3)O-3-0.08PbTiO(3)

Dragan Damjanovic, Nava Setter, Matthew Davis

Strain-field measurements and in situ polarized light microscopy have been used to evidence a hysteretic, irreversible electric-field-induced transition to a quasimonodomain rhombohedral phase in 111-oriented, pseudo-orthorhombic PZN-8PT [0.92Pb(Zn1/3 ...

2005

Domain engineering of the transverse piezoelectric coefficient in perovskite ferroelectrics

Dragan Damjanovic, Nava Setter, Matthew Davis

The transverse piezoelectric coefficient d(31)*, has been calculated for the six domain-engineered structures occurring in perovskite single crystals, using data for rhombohedral PMN-33PT [0.67Pb(Mg1/3Nb2/3)O-3-0.33PbTiO(3)], orthorhombic potassium niobate ...

2005

Piezoelectric properties of Li- and Ta-modified (K0.5Na0.5)NbO3 ceramics

Dragan Damjanovic, Nava Setter, Evelyn Hollenstein, Matthew Davis

Lead-free, potassium sodium niobate piezoelectric ceramics substituted with lithium (K0.5-x/2,Na0.5-x/2,Li-x)NbO3 or lithium and tantalum (K0.5-x/2,Na0.5-x/2,Li-x)(Nb1-y,Ta-y)O-3 have been synthesized by traditional solid state sintering. The compositions ...

2005

Correlation between dielectric anisotropy and positive or zero transverse piezoelectric coefficients in perovskite ferroelectric single crystals

Dragan Damjanovic, Nava Setter, Matthew Davis

The transverse piezoelectric coefficient (d(31)(star)) has been calculated for tetragonal barium titanate (BT) and lead titanate (PT) cut along nonpolar axes, over a range of temperatures, using the phenomenological Landau-Ginzburg-Devonshire theory. It is ...

2005