TY - JOUR
T1 - Comprehensive study of crystallization and phase formation in (La,Gd)BGeO5 glass
AU - Takahashi, Yoshihiro
AU - Benino, Yasuhiko
AU - Fujiwara, Takumi
AU - Komatsu, Takayuki
PY - 2008/10
Y1 - 2008/10
N2 - The glasses with (25-x) La2O3·xGd2O 3·25B2O3·50GeO2 composition corresponding to the (La,Gd)BGeO5 were prepared, and the substitution effect of gadolinium ions (Gd3+) on crystallization behavior and phase formation was examined by DTA, XRD and Raman techniques in detail. Ferroelectric (La,Gd)BGeO5 phase with hexagonal stillwellite structure were crystallized in the composition range of x = 0-15. Although no significant change in physical properties was observed in the whole composition range, crystallization behavior was drastically changed as the progressive substitution of Gd3+ was carried out (i.e., crystallization of monoclinic phase of (La,Gd)BGeO5 and high-pressure phase of Gd 2Ge2O7 with a triclinic structure). Structure of the glasses and crystallized phases, and the phase formation mechanism were also discussed.
AB - The glasses with (25-x) La2O3·xGd2O 3·25B2O3·50GeO2 composition corresponding to the (La,Gd)BGeO5 were prepared, and the substitution effect of gadolinium ions (Gd3+) on crystallization behavior and phase formation was examined by DTA, XRD and Raman techniques in detail. Ferroelectric (La,Gd)BGeO5 phase with hexagonal stillwellite structure were crystallized in the composition range of x = 0-15. Although no significant change in physical properties was observed in the whole composition range, crystallization behavior was drastically changed as the progressive substitution of Gd3+ was carried out (i.e., crystallization of monoclinic phase of (La,Gd)BGeO5 and high-pressure phase of Gd 2Ge2O7 with a triclinic structure). Structure of the glasses and crystallized phases, and the phase formation mechanism were also discussed.
KW - Crystallization
KW - Glass
KW - Phase formation
KW - Stillwellite
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U2 - 10.2109/jcersj2.116.1108
DO - 10.2109/jcersj2.116.1108
M3 - Article
AN - SCOPUS:54249137336
SN - 1882-0743
VL - 116
SP - 1108
EP - 1114
JO - Journal of the Ceramic Society of Japan
JF - Journal of the Ceramic Society of Japan
IS - 1358
ER -