Publications by Naama Klein | EPFL Graph Search

Structural complexity of (Na0.5Bi0.5)TiO3-BaTiO3 as revealed by Raman spectroscopy

Nava Setter, Dragan Damjanovic, Naama Klein

The structural phase diagram of the Pb-free ferroelectric (Na1/2Bi1/2)1−xBaxTiO3, x

2010

What Can Be Expected From Lead-Free Piezoelectric Materials?

Dragan Damjanovic, Li Jin, Naama Klein, Viktor Porokhonskyy

The reasons for the lower piezoelectric properties in the most studied lead-free piezoelectrics, modified (K,Na)NbO3 and (Bi0.5Na0.5)TiO3, are discussed. Contributions from domain wall motion and properties at the morphotropic phase boundary are considered ...

2010

Properties and phase transitions in lead free piezoelectrics : (K,Na)NbO3-LiNbO3 and (Bi,Na)TiO3-BaTiO3

Naama Klein

Piezoelectric materials are used in a wide range of applications, with lead zirconate titanate (PZT) ceramics being the dominant family of materials, due to high piezoelectric coefficients, dielectric permittivity and coupling factors. The high properties ...

EPFL2009

High-temperature instability of Li- and Ta-modified (K,Na)NbO3 piezoceramics

Nava Setter, Dragan Damjanovic, Naama Klein

2008

Raman spectroscopy of (K,Na)NbO3 and (K,Na)(1-x)LixNbO3

Nava Setter, Dragan Damjanovic, Naama Klein, Harry Joseph Trodahl

We report Raman spectroscopy in all four phases of a (K0.5+delta Na0.5-delta)NbO3 (delta similar to 0.03) crystal and ((K0.5+delta Na0.5-delta)(1-x)Li-x)NbO3 for x=0.02 and 0.03. The phase transitions in the Li-free crystal are homogeneous and hysteretic, ...

AIP American Institute of Physics2008

A study of the phase diagram of (K,Na,Li)NbO3 determined by dielectric and piezoelectric measurements, and Raman spectroscopy

Nava Setter, Dragan Damjanovic, Harry Joseph Trodahl, Naama Klein, Evelyn Hollenstein

2007

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

Nava Setter, Dragan Damjanovic, Matthew Davis, Naama Klein

2007

Compositional inhomogeneity in Li- and Ta-modified (K, Na)NbO3 ceramics

Nava Setter, Dragan Damjanovic, Naama Klein, Evelyn Hollenstein, Yi Wang

2007