Ferroelectric Properties and Second Harmonic Intensities of Stillwellite-Type (La,Ln)BGeO5Crystallized Glasses

Takahashi, Yoshihiro; Iwasaki, Akihisa; Benino, Yasuhiko; Fujiwara, Takeshi; Komatsu, Takayuki

doi:10.1143/jjap.41.3771

Cited by 23 publications

(13 citation statements)

References 3 publications

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“…10) Therefore, many researchers have also had a great interest in "stillwellite-related glass and glass-ceramics" from the viewpoint not only of ferroelectrics, but also of optical material. For example, Verwey et al investigated luminescent properties and the quantum efficiency of Eu 3+ in LaBGeO5 glass and compared them with that of Eu 3+ in LaBGeO5 crystal.…”

Section: )-5)mentioning

confidence: 99%

Comprehensive study of crystallization and phase formation in (La,Gd)BGeO5 glass

Takahashi

Benino

Fujiwara

et al. 2008

J. Ceram. Soc. Japan

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The glasses with (25-x)La2O3·xGd2O3·25B2O3·50GeO2 composition corresponding to the (La,Gd)BGeO5 were prepared, and the substitution effect of gadolinium ions (Gd 3+ ) 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 Gd 3+ was carried out (i.e., crystallization of monoclinic phase of (La,Gd)BGeO5 and high-pressure phase of Gd2Ge2O7 with a triclinic structure). Structure of the glasses and crystallized phases, and the phase formation mechanism were also discussed.

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Section: )-5)mentioning

confidence: 99%

Comprehensive study of crystallization and phase formation in (La,Gd)BGeO5 glass

Takahashi

Benino

Fujiwara

et al. 2008

J. Ceram. Soc. Japan

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“…The bulk nanocrystallization was revealed through homogeneous nucleation of ferroelectric LaBGeO 5 in the glass of composition 25La 2 O 3 -25B 2 O 3 -50GeO 2 [8], and the possibility of local LaBGeO 5 crystal precipitation under the influence of laser radiation was recently shown [9,10]. Neodymium-doped LBG glasses [11] and erbium-ytterbium borogermanate glasses are of interest as active media of solid-state lasers [12].…”

Section: Introductionmentioning

confidence: 99%

Borogermanate glasses with a high terbium oxide content

Savinkov

Сигаев

Golubev

et al. 2010

Journal of Non-Crystalline Solids

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“…8)13) For instance, formation of LaBGeO 5 -crystalline dots has been succeeded in Nd-doped glassy LaBGeO 5 by means of a laser processing. 10) However, the silicogermanate system, i.e., glassy LaB(Si,Ge)O 5 , has not been reported so far. Therefore, it is of particular interest in fabricating the glassy LaB(Si,Ge)O 5 .…”

Section: Introductionmentioning

confidence: 99%

Impact of Nd-doping on crystallization and phase separation in glassy ferroelectric LaBSixGe1−xO5 (x = 0, 0.4)

Takahashi

Yasuoka

Fujiwara

2013

J. Ceram. Soc. Japan

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Since stillwellite-type ferroelectric LaBGeO 5 shows the intriguing physical properties by the doping/substituting-modification, the stillwellite-type glass-ceramics has been studied extensively from viewpoint of material engineering. In this study, we examined how the Nd-doping affects the glassy ferroelectric LaBGeO 5 and its modified sample, LaBSi 0.4 Ge 0.6 O 5 . We experimentally demonstrated that small amount of the doping gives a significant effect on the crystallization and phase-separation trends.

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Ferroelectric Properties and Second Harmonic Intensities of Stillwellite-Type (La,Ln)BGeO₅Crystallized Glasses

Cited by 23 publications

References 3 publications

Comprehensive study of crystallization and phase formation in (La,Gd)BGeO5 glass

Comprehensive study of crystallization and phase formation in (La,Gd)BGeO5 glass

Borogermanate glasses with a high terbium oxide content

Impact of Nd-doping on crystallization and phase separation in glassy ferroelectric LaBSi<i><sub>x</sub></i>Ge<sub>1−</sub><i><sub>x</sub></i>O<sub>5</sub> (<i>x</i> = 0, 0.4)

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