University of Connecticut

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Condensed Matter Physics Seminar

Thursday, December 2, 2010
2:00pm – 3:30pm

Storrs Campus
Gant Science Complex P-121

Soonil Lee from the Center for Dielectric Studies, Materials Research Institute, at Pennsylvania State University, University Park, PA, will present: “Defect and Crystal Chemistry and Related Phenomena in Ferroelectric Perovskite Oxides.” Many properties of most electronic materials are governed by the defect type, distribution, concentration, and associated crystal structure. With a stream of nanotechnology, many electronic devices are pushing intensively toward smaller size of the components and, thereby, smaller size material. We may need more fundamental understanding for the material itself, showing dramatic property change with decreasing the size, to better control the properties. In particular, cation and anion defects in the oxide materials (nonideal) are crucial on their properties (reality) and very sensitive with atmosphere. We will demonstrate the influence of equilibrated nonstoichiometry in perovskite BaTiO3 and solid-solution with perovskite oxide end-members, and how to utilize the defects. The ferroelectric properties, electrical properties, thermoelectric properties, etc., will be discussed.

More information available at: www.physics.uconn.edu

Admission Fee: None

Contact:

Dawn Rawlinson dawn.rawlinson@uconn.edu 486-4916

UConn Physics Department

Physics Department (primary), UConn Master Calendar

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