Hall effect and dielectric properties of Mn-doped barium titanate

Xiang Wang, Min Gu, Bin Yang, Shining Zhu, Wenwu Cao

Research output: Contribution to journalConference articlepeer-review

51 Scopus citations

Abstract

BaMnxTi1-xO3 (0≤x≤0.01) ceramics have been prepared using a sol-gel method. The Hall coefficient, leakage conductance and dielectric constant were measured. The Hall effect confirms that the charge carriers of the ceramics are electrons, and the electronic concentration n=1/|eR| decreases with increasing Mn concentration. We propose that Mn3+ and Mn4+ substitution of Ti can partially trap the conductance electrons. The dielectric constant ε1 of the pellets exhibited a peak at Tc∼110°C upon heating and the height and position of this peak depends on the Mn concentration. The Mn2+ incorporated in the oxygen octahedron of the BaTiO3 unit cell is in a more centered position than Ti4+ and may, therefore, modify considerably the ferroelectric property.

Original languageEnglish (US)
Pages (from-to)855-859
Number of pages5
JournalMicroelectronic Engineering
Volume66
Issue number1-4
DOIs
StatePublished - Apr 1 2003
EventIUMRS-ICEM 2002 - Xi an, China
Duration: Jun 10 2002Jun 14 2002

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering

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