期刊
APPLIED PHYSICS LETTERS
卷 95, 期 10, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3222942
关键词
barium compounds; bismuth compounds; crystal growth from solution; dielectric polarisation; electrical resistivity; ferroelectric Curie temperature; ferroelectric switching; manganese; permittivity; piezoelectricity; sodium compounds
资金
- Ministry of Science and Technology of China [2008AA03Z410, 2009CB623305]
- Natural Science Foundation of China [60837003, 50777065, 50602047]
- Shanghai Municipal Government [08JC1420500]
- Innovation Fund of Shanghai Institute of Ceramics [SCX0608]
- Fund of National Engineering Research Center for Optoelectronic Crystalline Materials [2005DC105003, 2007K05]
- National Science Foundation [DMR-0806592]
- U. S. Department of Energy [DE-FG02-07ER46480]
- U.S. Department of Energy (DOE) [DE-FG02-07ER46480] Funding Source: U.S. Department of Energy (DOE)
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0806592] Funding Source: National Science Foundation
High piezoelectric and ferroelectric properties have been found in Mn-doped Na0.5Bi0.5TiO3-BaTiO3 single crystals, which were grown by a top-seeded solution method. The electrical resistivity, dielectric constant, and ferroelectric and piezoelectric properties were all found to be notably enhanced by Mn. The piezoelectric constant d(33) and electromechanical coupling coefficients k(t) and k(31) were found to be as high as 483 pC/N, 0.56, and 0.40, respectively. These values are much higher than those previously reported for Pb-free piezoelectric crystals, demonstrating the real potential for alternative lead-free systems for sensor and piezoelectric applications.
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