Threshold concentration of MgO in near-stoichiometric LiNbO3 crystals

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

MgO-doped near-stoichiometric LiNbO3 crystals have been grown by the high-temperature top-seeded solution growth method from the K 2O-Li2O-Nb2O5 flux. The critical threshold concentration of MgO required to minimize photorefractive damage in the crystals has been determined on the basis of the liquid-solid phase relations. The lowest MgO concentration in the melt where above-threshold crystals can be still grown with near-stoichiometric crystal composition was 0. 2 mol%. At near-threshold MgO concentration, a transitional region was detected along the crystal growth axis, where two OH- absorption bands peaking at 3465 and 3534 cm-1 frequency were observed in the IR spectra at the same time.

Original languageEnglish
Pages (from-to)149-155
Number of pages7
JournalJournal of Crystal Growth
Volume284
Issue number1-2
DOIs
Publication statusPublished - Oct 15 2005

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Crystals
thresholds
crystals
Crystallization
Crystal growth
solid phases
crystal growth
Absorption spectra
low concentrations
Fluxes
damage
absorption spectra
lithium niobate
Liquids
liquids
Chemical analysis
Temperature
hydroxide ion

Keywords

  • A1. Doping
  • A1. Phase equilibria
  • A2. Top seeded solution growth
  • B1. Niobates
  • B2. Nonlinear optic materials

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Threshold concentration of MgO in near-stoichiometric LiNbO3 crystals. / Péter, A.; Polgár, K.; Kovács, L.; Lengyel, K.

In: Journal of Crystal Growth, Vol. 284, No. 1-2, 15.10.2005, p. 149-155.

Research output: Contribution to journalArticle

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abstract = "MgO-doped near-stoichiometric LiNbO3 crystals have been grown by the high-temperature top-seeded solution growth method from the K 2O-Li2O-Nb2O5 flux. The critical threshold concentration of MgO required to minimize photorefractive damage in the crystals has been determined on the basis of the liquid-solid phase relations. The lowest MgO concentration in the melt where above-threshold crystals can be still grown with near-stoichiometric crystal composition was 0. 2 mol{\%}. At near-threshold MgO concentration, a transitional region was detected along the crystal growth axis, where two OH- absorption bands peaking at 3465 and 3534 cm-1 frequency were observed in the IR spectra at the same time.",
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AU - Polgár, K.

AU - Kovács, L.

AU - Lengyel, K.

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N2 - MgO-doped near-stoichiometric LiNbO3 crystals have been grown by the high-temperature top-seeded solution growth method from the K 2O-Li2O-Nb2O5 flux. The critical threshold concentration of MgO required to minimize photorefractive damage in the crystals has been determined on the basis of the liquid-solid phase relations. The lowest MgO concentration in the melt where above-threshold crystals can be still grown with near-stoichiometric crystal composition was 0. 2 mol%. At near-threshold MgO concentration, a transitional region was detected along the crystal growth axis, where two OH- absorption bands peaking at 3465 and 3534 cm-1 frequency were observed in the IR spectra at the same time.

AB - MgO-doped near-stoichiometric LiNbO3 crystals have been grown by the high-temperature top-seeded solution growth method from the K 2O-Li2O-Nb2O5 flux. The critical threshold concentration of MgO required to minimize photorefractive damage in the crystals has been determined on the basis of the liquid-solid phase relations. The lowest MgO concentration in the melt where above-threshold crystals can be still grown with near-stoichiometric crystal composition was 0. 2 mol%. At near-threshold MgO concentration, a transitional region was detected along the crystal growth axis, where two OH- absorption bands peaking at 3465 and 3534 cm-1 frequency were observed in the IR spectra at the same time.

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KW - B1. Niobates

KW - B2. Nonlinear optic materials

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