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Matsumoto, Keisuke*; Koyama, Tsukasa*; Mori, Shigeo*; Yoshii, Kenji; Kambe, Takashi*; Ikeda, Naoshi*
IOP Conference Series; Materials Science and Engineering, 18(9), p.092047_1 - 092047_4, 2011/09
Times Cited Count:1 Percentile:50.35(Materials Science, Ceramics)Changes of charge ordered (CO) structure by partial substitution of Mn for Fe in YbFeO
were investigated by a transmission electron microscope (TEM), incombination with conventional dielectric measurement. It is revealed that partial substitution of Mn
for Fe
in YbFe
O
destroyed drastically the CO structure with the wave vector of q=
1/3 1/3 1/2
. Consequently polar clustering structure giving rise to honeycomb-shaped diffuse streaks was found in YbFeMnO
. The random distribution of polar clustering structure gives rise to characteristic broad dielectric dispersion.
Matsumoto, Keisuke*; Koyama, Tsukasa*; Mori, Shigeo*; Yoshii, Kenji; Ikeda, Naoshi*
Journal of Physics; Conference Series, 320, p.012085_1 - 012085_5, 2011/09
Times Cited Count:0 Percentile:0.00(Physics, Condensed Matter)In order to clarify the stability of charge ordered structure (CO) in charge- and spinfrustrated ferrite YbFeO
, we have investigated changes of the CO structure by partial substitution of Mn
for Fe
in YbFe
O
by a transmission electron microscope (TEM), incombination with conventional dielectric measurement. It is revealed that subtle substitution of Mn
for Fe
in YbFe
O
destroyed drastically the CO structure with the wave vector of q=
1/3 1/3 1/2
and, instead, induced polar clustering structure characterized by honeycomb shaped diffuse scatterings in the reciprocal space. The formation of polar clustering structure should be responsible for the characteristic dielectric dispersion.