Study on optical, dielectric, and magnetic properties of Ba2MnGe2O7 ceramics

Author

Su, Jie ; Guo, Yunfeng ; Zhang, Junting ; Sun, Hui ; He, Ju ; Lu, Xiaomei ; Lu, Chaojing ; Zhu, Jinsong

Author_Institution

Phys. Dept., Nanjing Univ., Nanjing, China

fYear

2012

fDate

9-13 July 2012

Firstpage

1

Lastpage

3

Abstract

Ba₂MnGe₂O₇ ceramics were prepared by the solid-state reaction method. The prepared powders had a good photon absorption performance in the range of 300-800 nm with the direct band gap energy of 3.1 eV. A dielectric relaxation behavior at low temperature is observed which may come from the dipolar effects associated with the changeable valence of transition metal ions. In addition, antiferromagnetic order was also observed bellow 5.1 K.

Keywords

antiferromagnetic materials; barium compounds; ceramics; dielectric materials; dielectric relaxation; energy gap; magnetisation; manganese compounds; powder technology; powders; ultraviolet spectra; visible spectra; Ba₂MnGe₂O₇; antiferromagnetic materials; band gap energy; ceramics; dielectric properties; dielectric relaxation; dipolar effects; magnetic properties; magnetisation; optical properties; photon absorption spectra; powders; solid-state reaction method; ultraviolet-visible spectra; wavelength 300 nm to 800 nm; Absorption; Ceramics; Dielectrics; Photonics; Powders; Temperature distribution; Temperature measurement; Ba2MnGe2O7 ceramics; UV-Vis absorption; antiferromagnetic order; dielectric relaxation;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics held jointly with 2012 European Conference on the Applications of Polar Dielectrics and 2012 International Symp Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials (ISAF/ECAPD/PFM), 2012 Intl Symp

Conference_Location

Aveiro

Print_ISBN

978-1-4673-2668-1

Type

conf

DOI

10.1109/ISAF.2012.6297818

Filename

6297818