TY  - JOUR
AU  - Ding, Y.
AU  - Wang, Z. L.
TI  - Translation and orientation domain boundaries in La2/3Ca1/3MnO3
JO  - Philosophical magazine  / A
VL  - 86
SN  - 0141-8610
CY  - London [u.a.]
PB  - Taylor and Francis
M1  - PreJuSER-57549
SP  - 2329 - 2342
PY  - 2006
N1  - Record converted from VDB: 12.11.2012
AB  - From crystal structure, three types of translation and two types of orientation domain boundaries are expected in La2/3Ca1/3MnO3 as a result of phase transition. However, the most easily observed domain boundaries in the bulk samples are [1/2 1/2 1/2] translation boundaries ( or antiphase boundaries) and 90 degrees domain boundaries, while the [1/2 0 1/2] and [0 1/2 0] translation boundaries were rarely observed. In this paper, this phenomenon is explained by considering the tilting modes of the oxygen octahedra in the structure. We found that there is no distortion to the nearby oxygen octahedra if the [1/2 1/2 1/2] translation boundaries take the ( 010) boundary planes and the 90 degrees domain boundaries are in the {101} planes, making them low-energy boundary planes and, thus, are easy to form. On the other hand, the [1/2 0 1/2] and [0 1/2 0] translation boundaries introduce a distortion in the oxygen octahedra, which requires breaking the tilting modes in the boundary areas and, therefore, they are high-energy boundary planes, which are rarely observed. The above-expected results are supported by our transmission electron microscopy data.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000237221200003
DO  - DOI:10.1080/14786430500519780
UR  - https://juser.fz-juelich.de/record/57549
ER  -