TY - JOUR
T1 - The volume ratio of domains in the tetragonal phase of KMnF3
AU - Okazaki, A.
AU - Soejima, Y.
AU - Machida, M.
PY - 1987/3/20
Y1 - 1987/3/20
N2 - The previous results on the domain volume distribution in the tetragonal phase of KMnF3 with the space group I4/mcm have been re-examined by X-ray and neutron single-crystal diffraction in a temperature range down to 110 K; the transition temperature between the cubic and tetragonal phases is 186.6 K. For a smaller specimen examined with X-rays, the distribution is fairly constant in a temperature region close to the transition, whereas it shows a gradual change at lower temperatures. For a larger specimen examined with neutrons, the distribution is nearly constant over the whole temperature range. The difference in the behaviour can be attributed to the size or shape effect and/or to the different distributions of defects. All the previous data can be explained on the basis of the present results.
AB - The previous results on the domain volume distribution in the tetragonal phase of KMnF3 with the space group I4/mcm have been re-examined by X-ray and neutron single-crystal diffraction in a temperature range down to 110 K; the transition temperature between the cubic and tetragonal phases is 186.6 K. For a smaller specimen examined with X-rays, the distribution is fairly constant in a temperature region close to the transition, whereas it shows a gradual change at lower temperatures. For a larger specimen examined with neutrons, the distribution is nearly constant over the whole temperature range. The difference in the behaviour can be attributed to the size or shape effect and/or to the different distributions of defects. All the previous data can be explained on the basis of the present results.
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U2 - 10.1088/0022-3719/20/8/007
DO - 10.1088/0022-3719/20/8/007
M3 - Article
AN - SCOPUS:0023312201
VL - 20
SP - 1041
EP - 1045
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
SN - 0953-8984
IS - 8
ER -