Electrical properties of new hollandite complex oxide nanocrystals

Authors

S. Liu
Wanlu LiFollow
J. Li
S. O'Brien

Document Type

Article

Publication Date

1-1-2015

Journal / Book Title

Journal of Nanoscience and Nanotechnology

Abstract

A new class of hollandite Ba–Mn–Ti oxide nanocrystals was synthesized. They are synthetic minerals exclusively composed of Ba, Ti, Mn, and O elements. The BaMn₃Ti₄O_14.25 nanocrystals (designated BMT-134), a typical member of this newly discovered hollandite oxide group, possess a giant dielectric constant and multiferroic properties. In the present paper, electrical properties of nanocrystals of BMT-134 are studied and compared with BMT-125 (BaMn₂Ti₅O_14.5). We studied the combined complex impedance and temperature dependent conductivity behaviors. The results prove that electron hopping plays a significant role in the electrical properties of the new hollandite BMT nanocrytals. In addition, the dielectric behavior and generation of ferroelectricity can be interpreted on the basis of Mott polaron theory.

DOI

10.1166/jnn.2015.10545

Montclair State University Digital Commons Citation

Liu, S.; Li, Wanlu; Li, J.; and O'Brien, S., "Electrical properties of new hollandite complex oxide nanocrystals" (2015). Department of Chemistry and Biochemistry Faculty Scholarship and Creative Works. 604.
https://digitalcommons.montclair.edu/chem-biochem-facpubs/604