Electron microscopy characterization of Ba(Cd1/3Ta2/3)O3 microwave dielectrics with boron additive

J. Sun; Shaojun Liu; Nathan Newman; Martha McCartney; David Smith

doi:10.1557/JMR.2004.0185

Electron microscopy characterization of Ba(Cd_1/3Ta_2/3)O₃ microwave dielectrics with boron additive

J. Sun, Shaojun Liu, Nathan Newman, Martha McCartney, David Smith

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

6 Scopus citations

Abstract

The microstructure of Ba(Cd_1/3Ta_2/3)O₃ ceramics with boron additive was investigated by high-resolution and analytical electron microscopy. Superlattice reflections were present at positions of (h ± 1/3, k ± 1/3, 1 ± 1/3) away from the fundamental reflections in the [1??10] zone diffraction pattern for the pseudocubic perovskite unit cell. Lattice images showed a well-ordered structure with hexagonal symmetry. No boron segregation and amorphous phase was observed along grain boundaries. An amorphous phase rich in boron-oxide was observed to form pockets partially penetrating along multiple grain junctions.

Original language	English (US)
Pages (from-to)	1387-1391
Number of pages	5
Journal	Journal of Materials Research
Volume	19
Issue number	5
DOIs	https://doi.org/10.1557/JMR.2004.0185
State	Published - May 2004

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Electron microscopy characterization of Ba(Cd1/3Ta2/3)O3 microwave dielectrics with boron additive",

abstract = "The microstructure of Ba(Cd1/3Ta2/3)O3 ceramics with boron additive was investigated by high-resolution and analytical electron microscopy. Superlattice reflections were present at positions of (h ± 1/3, k ± 1/3, 1 ± 1/3) away from the fundamental reflections in the [1??10] zone diffraction pattern for the pseudocubic perovskite unit cell. Lattice images showed a well-ordered structure with hexagonal symmetry. No boron segregation and amorphous phase was observed along grain boundaries. An amorphous phase rich in boron-oxide was observed to form pockets partially penetrating along multiple grain junctions.",

author = "J. Sun and Shaojun Liu and Nathan Newman and Martha McCartney and David Smith",

note = "Funding Information: The work at ASU was partially supported by the Office of Naval Research under Contract N000140010550 and by Arizona State University through the Wintech Center. We acknowledge the use of facilities in the John M. Cowley Center for High Resolution Electron Microscopy at Arizona State University.",

year = "2004",

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doi = "10.1557/JMR.2004.0185",

language = "English (US)",

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AU - Sun, J.

AU - Liu, Shaojun

AU - Newman, Nathan

AU - McCartney, Martha

AU - Smith, David

N1 - Funding Information: The work at ASU was partially supported by the Office of Naval Research under Contract N000140010550 and by Arizona State University through the Wintech Center. We acknowledge the use of facilities in the John M. Cowley Center for High Resolution Electron Microscopy at Arizona State University.

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N2 - The microstructure of Ba(Cd1/3Ta2/3)O3 ceramics with boron additive was investigated by high-resolution and analytical electron microscopy. Superlattice reflections were present at positions of (h ± 1/3, k ± 1/3, 1 ± 1/3) away from the fundamental reflections in the [1??10] zone diffraction pattern for the pseudocubic perovskite unit cell. Lattice images showed a well-ordered structure with hexagonal symmetry. No boron segregation and amorphous phase was observed along grain boundaries. An amorphous phase rich in boron-oxide was observed to form pockets partially penetrating along multiple grain junctions.

AB - The microstructure of Ba(Cd1/3Ta2/3)O3 ceramics with boron additive was investigated by high-resolution and analytical electron microscopy. Superlattice reflections were present at positions of (h ± 1/3, k ± 1/3, 1 ± 1/3) away from the fundamental reflections in the [1??10] zone diffraction pattern for the pseudocubic perovskite unit cell. Lattice images showed a well-ordered structure with hexagonal symmetry. No boron segregation and amorphous phase was observed along grain boundaries. An amorphous phase rich in boron-oxide was observed to form pockets partially penetrating along multiple grain junctions.

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Electron microscopy characterization of Ba(Cd_1/3Ta_2/3)O₃ microwave dielectrics with boron additive

Abstract

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