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Integrated Ferroelectrics
An International Journal
Volume 108, 2009 - Issue 1
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Original Articles

LEAD-FREE (Na0.5Bi0.5)1-xBaxTiO3 SINGLE CRYSTALS (0 ≤ x ≤ 0.05) AND THEIR DIELECTRIC AND PYROELECTRIC PROPERTIES

J. SUCHANICZ Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30-084, Krakow, Poland
,
B. GLOS Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30-084, Krakow, Poland
,
G. STOPA Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30-084, Krakow, Poland
,
T. KRUZINA Department of Physics, Dniepropetrovsk National University, 13 Nauchnyi per, 49-050, Dniepropetrovsk, Ukraine
,
J. KUSZ Institute of Physics, University of Silesia, ul.Uniwersytecka 4, 40-007, Katowice, Poland
,
M. ZUBKO Institute of Physics, University of Silesia, ul.Uniwersytecka 4, 40-007, Katowice, Poland
,
W. HOFMEISTER Institut für Geowissenschaften der Universität, 55099, Mainz, Germany
,
I. JANKOWSKA-SUMARA Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30-084, Krakow, Poland
,
D. WCISŁO Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30-084, Krakow, Poland
,
K. KONIECZNY Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30-084, Krakow, Poland
,
R. ROSIEK Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30-084, Krakow, Poland
,
A. FINDER High National School, ul. Mickiewicza 21, 38-500, Sanok, Poland
,
K. PYTEL Institute of Technics, Pedagogical University, ul. Podchorazych 2, 30-084, Krakow, Poland
,
M. DAMBEKALNE Institute of Solid State Physics, University of Latvia, Kengaraga 8, LV-1063, Riga, Latvia
&
A. STERNBERG Institute of Solid State Physics, University of Latvia, Kengaraga 8, LV-1063, Riga, Latvia
 show all
Pages 98-105 | Received 31 Mar 2009, Accepted 14 Aug 2009, Published online: 20 Sep 2010
 
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ABSTRACT

Lead-free single crystals of Na0.5Bi0.5TiO3-BaTiO3 (NBT-BT) system were prepared by Czochralski method and their dielectric and pyroelectric properties have been studied. The results were compared with these for pure NBT. The obtained samples show pure perovskite structure with rhombohedral symmetry at room temperature. Low frequency (100 Hz–100 kHz) investigations reveal the diffuse phase transitions. The obtained results are discussed in terms of local electric and strain fields caused by different ionic radius of (Na, Bi) and Ba ions. The NBT-BT system is expected to be a new promising candidate for lead-free electronic crystals.

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