Electrical properties of new hollandite complex oxide nanocrystals

Shuangyi Liu; Wanlu Li; Jackie Li; Stephen O'Brien

doi:10.1166/jnn.2015.10545

Electrical properties of new hollandite complex oxide nanocrystals

Shuangyi Liu
, Wanlu Li
, Jackie Li
, Stephen O'Brien

Chemistry and Biochemistry

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

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.

Original language	English
Pages (from-to)	7074-7080
Number of pages	7
Journal	Journal of Nanoscience and Nanotechnology
Volume	15
Issue number	9
DOIs	https://doi.org/10.1166/jnn.2015.10545
State	Published - 1 Sep 2015

Keywords

Complex oxides
Hollandite
Mott polaron
Multiferroics

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title = "Electrical properties of new hollandite complex oxide nanocrystals",

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 BaMn3Ti4O14.25 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 (BaMn2Ti5O14.5). 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.",

keywords = "Complex oxides, Hollandite, Mott polaron, Multiferroics",

author = "Shuangyi Liu and Wanlu Li and Jackie Li and Stephen O'Brien",

year = "2015",

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doi = "10.1166/jnn.2015.10545",

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}

TY - JOUR

T1 - Electrical properties of new hollandite complex oxide nanocrystals

AU - Liu, Shuangyi

AU - Li, Wanlu

AU - Li, Jackie

AU - O'Brien, Stephen

PY - 2015/9/1

Y1 - 2015/9/1

N2 - 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 BaMn3Ti4O14.25 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 (BaMn2Ti5O14.5). 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.

AB - 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 BaMn3Ti4O14.25 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 (BaMn2Ti5O14.5). 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.

KW - Complex oxides

KW - Hollandite

KW - Mott polaron

KW - Multiferroics

UR - https://www.scopus.com/pages/publications/85000624311

U2 - 10.1166/jnn.2015.10545

DO - 10.1166/jnn.2015.10545

M3 - Article

AN - SCOPUS:85000624311

SN - 1533-4880

VL - 15

SP - 7074

EP - 7080

JO - Journal of Nanoscience and Nanotechnology

JF - Journal of Nanoscience and Nanotechnology

IS - 9

ER -

Electrical properties of new hollandite complex oxide nanocrystals

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