barium titanate Archives | The American Ceramic Society

barium titanate

Strontium and barium titanate: Similar materials, different defects

By Lisa McDonald / January 29, 2019

Researchers often use similar defect models for barium titanate and strontium titanate even though the materials experience different dominant metal vacancies. New research suggests this practice is suitable in some cases, but researchers should tread more carefully in others.

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Acoustic detection method may identify early cracks in ceramic capacitors and beyond

By April Gocha / March 24, 2016

Researchers at the National Institute of Standards and Technology may be on to something that can help with better monitoring of ceramic capacitors—they have devised a new nondestructive method that may be able to detect cracks in materials before they lead to device failure.

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Breakthrough in understanding piezoelectric mechanism in Pb-free ferroelectrics

By Eileen De Guire / September 11, 2012

Applying a poling field (Epol) creates a rhombohedral (R)/tetragonal (T) morphotropic phase boundary in a single phase grain of (Bi½Na½)TiO3-6%BaTiO3. Such direct in-situ transmission electron microscopy observations led to the establishment of an Epol vs x phase diagram for (1-x)(Bi½Na½)TiO3–xBaTiO3. Credit: Tan; Iowa State University. Lead zirconate titanate ceramics are the “gold standard” materials for…

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Does fast-firing of multilayer ceramic capacitors help or hinder?

By Eileen De Guire / October 13, 2011

3D microstructure of a typical MLCC slow-fired conditions (top) and fast-fired conditions. Credit: JACerS The Clive Randall group at Penn State has just published a paper, “Effect of Firing Rates on Electrode Morphology and Electrical Properties of Multilayer Ceramic Capacitors” in the Journal of the American Ceramic Society and available via the Early View option.…

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Spectroscopic Assessments of Domain Texture in Barium Titanate: I. Confocal Raman Polarization Analysis

By / January 27, 2010

Volume 93 Issue 1, Pages 256 – 264 Giuseppe Pezzotti, Atsuo Matsutani, Wenliang ZhuPublished Online: Oct 14 2009 11:42AM DOI: 10.1111/j.1551-2916.2009.03340.x ABSTRACT A three-dimensional quantitative Raman analysis of ferroelectric domain orientation is presented for single-crystalline barium titanate (BaTiO3; BT). The analysis has been developed according to basic principles of polarized/confocal Raman spectroscopy and is aimed…

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