Abstract
Microstructures of ordered Ba(Cd 1/3Ta 2/3)O 3 perovskite dielectric ceramics with and without a boron additive have been observed by atomic resolution transmission electron microscopy (TEM). The selected area electron diffraction and lattice image show a well-ordered structure with hexagonal symmetry (lattice constants of a∼5.8 Å and c∼7.1 Å) in the ordered Ba(Cd 1/3Ta 2/3)O 3 with a boron additive, which is similar to those in ordered Ba(Zn 1/3Ta 2/3)O 3 and Ba(Mg 1/3Ta 2/3)O 3 ceramics. Ordered domains with a twin crystallographic relationship and high-density domain interfaces induced by ordering were observed in the ordered Ba(Cd 1/3Ta 2/3)O 3 without a boron additive sintered at a relatively high temperature. Atomic resolution TEM further revealed the conservative twin boundaries along (001) and (110) planes and non-conservative antiphase boundaries with a projected displacement vector of the type [001] in the ordered Ba(Cd 1/3Ta 2/3)O 3 without a boron additive. Finally, the energetics of different domain interfaces are discussed with the interfacial structures in ordered Ba(Cd 1/3Ta 2/3)O 3 ceramics revealed by an electron microscope.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1047-1052 |
| Number of pages | 6 |
| Journal | Journal of the American Ceramic Society |
| Volume | 89 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 2006 |
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ASJC Scopus subject areas
- Ceramics and Composites
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Atomic resolution transmission electron microscopy of the microstructure of ordered Ba(Cd 1/3Ta 2/3)O 3 perovskite ceramics. / Sun, J.; Liu, Shaojun; Newman, Nathan; Smith, David.
In: Journal of the American Ceramic Society, Vol. 89, No. 3, 03.2006, p. 1047-1052.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Atomic resolution transmission electron microscopy of the microstructure of ordered Ba(Cd 1/3Ta 2/3)O 3 perovskite ceramics
AU - Sun, J.
AU - Liu, Shaojun
AU - Newman, Nathan
AU - Smith, David
PY - 2006/3
Y1 - 2006/3
N2 - Microstructures of ordered Ba(Cd 1/3Ta 2/3)O 3 perovskite dielectric ceramics with and without a boron additive have been observed by atomic resolution transmission electron microscopy (TEM). The selected area electron diffraction and lattice image show a well-ordered structure with hexagonal symmetry (lattice constants of a∼5.8 Å and c∼7.1 Å) in the ordered Ba(Cd 1/3Ta 2/3)O 3 with a boron additive, which is similar to those in ordered Ba(Zn 1/3Ta 2/3)O 3 and Ba(Mg 1/3Ta 2/3)O 3 ceramics. Ordered domains with a twin crystallographic relationship and high-density domain interfaces induced by ordering were observed in the ordered Ba(Cd 1/3Ta 2/3)O 3 without a boron additive sintered at a relatively high temperature. Atomic resolution TEM further revealed the conservative twin boundaries along (001) and (110) planes and non-conservative antiphase boundaries with a projected displacement vector of the type [001] in the ordered Ba(Cd 1/3Ta 2/3)O 3 without a boron additive. Finally, the energetics of different domain interfaces are discussed with the interfacial structures in ordered Ba(Cd 1/3Ta 2/3)O 3 ceramics revealed by an electron microscope.
AB - Microstructures of ordered Ba(Cd 1/3Ta 2/3)O 3 perovskite dielectric ceramics with and without a boron additive have been observed by atomic resolution transmission electron microscopy (TEM). The selected area electron diffraction and lattice image show a well-ordered structure with hexagonal symmetry (lattice constants of a∼5.8 Å and c∼7.1 Å) in the ordered Ba(Cd 1/3Ta 2/3)O 3 with a boron additive, which is similar to those in ordered Ba(Zn 1/3Ta 2/3)O 3 and Ba(Mg 1/3Ta 2/3)O 3 ceramics. Ordered domains with a twin crystallographic relationship and high-density domain interfaces induced by ordering were observed in the ordered Ba(Cd 1/3Ta 2/3)O 3 without a boron additive sintered at a relatively high temperature. Atomic resolution TEM further revealed the conservative twin boundaries along (001) and (110) planes and non-conservative antiphase boundaries with a projected displacement vector of the type [001] in the ordered Ba(Cd 1/3Ta 2/3)O 3 without a boron additive. Finally, the energetics of different domain interfaces are discussed with the interfacial structures in ordered Ba(Cd 1/3Ta 2/3)O 3 ceramics revealed by an electron microscope.
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U2 - 10.1111/j.1551-2916.2005.00800.x
DO - 10.1111/j.1551-2916.2005.00800.x
M3 - Article
VL - 89
SP - 1047
EP - 1052
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
SN - 0002-7820
IS - 3
ER -