Details

Autor(en) / Beteiligte

• Grigorieva, Veronika D.
• Shlegel, Vladimir N.
• Borovlev, Yuri A.
• Ryadun, Alexey A.
• Bekker, Tatyana B.

Titel

Bolometric molybdate crystals grown by low-thermal-gradient Czochralski technique

Ist Teil von

• Journal of crystal growth, 2019-10, Vol.523, p.125144, Article 125144

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •Two crystal growth approaches in low-thermal-gradient conditions were used.•Na2Mo2O7 and Li2MoO4 morphology dependence from Jackson criterion value was shown.•In Na2Mo2O7 crystals three cleavage planes (0 1 0), (0 0 1) and (0 2 1) were observed.•Na2Mo2O7 and Li2MoO4 crystal samples photoluminescence at 300 K and 77 K was studied. Alkaline molybdate crystals are proved to be promising bolometric materials for rare events study, particularly, for neutrinoless double-beta decay search. In addition to high molybdenum ratio, Li2MoO4 and Na2Mo2O7 crystals exhibit ultra-low radiation background, luminescence at low temperatures, considerable light yield and high energy resolution. In this work dependence of crystal faceting on the value of Jackson criterion was shown. Growth mechanisms of Li2MoO4 and Na2Mo2O7 crystals and their influence on crystal morphology were studied, representative facet families were determined. Three cleavage planes (0 1 0), (0 0 1) and (0 2 1) were identified in Na2Mo2O7 crystals grown in [0 1 0] direction.