LaBGeO5 single crystals in glass and second-harmonic generation

Yoshihiro Takahashi, Kenji Kitamura, Yasuhiko Benino, Takumi Fujiwara, Takayuki Komatsu

Research output: Contribution to journalConference articlepeer-review

19 Citations (Scopus)


Flower-shaped crystals with diameters of 100-200 μm consisting of LaBGeO5 (LBGO) single crystals similar to petals were observed in the interior of transparent LBGO surface-crystallized glasses. Each flower-shaped crystal was radially grown from the surface of the included bubbles. A more intense second-harmonic generation was observed from the LBGO crystallized glasses with the flower-shaped LBGO single crystals compared to the samples without such crystals based on the Maker fringe technique and second-harmonic (SH) generation microscopy. The SH intensity for the flower-shaped LBGO single crystals monotonically decreased with increasing temperature up to ∼350°C, less than the Curie temperature reported so far (∼530°C). It is considered that the internal compressive stress induced by the difference in the thermal expansion between the LBGO single crystal and the corresponding glass affect the ferroelectric property of the flower-shaped LBGO single crystals in glass.

Original languageEnglish
Pages (from-to)155-160
Number of pages6
JournalMaterials Science and Engineering: B
Issue number1-3
Publication statusPublished - Jul 15 2005
Externally publishedYes


  • Crystallization
  • Glass
  • LaBGeO
  • Nonlinear optical crystal
  • Second-harmonic generation

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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