Growth and Neutron Diffraction Investigation of Ca3NbGa3Si2O14 and La3Ga5.5Nb0.5O14 Crystals
Joint Authors
Rybakov, V. B.
Cousson, A.
Domoroshchina, E. N.
Kaurova, I. A.
Zaharko, O.
Kuz’micheva, G. M.
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-03-14
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Materials Science , Minerals
Civil Engineering
Abstract EN
Langanite (La3Ga5.5Nb0.5O14, growth atmosphere: 99% Ar + 1% O2) and kanigasite (Ca3NbGa3Si2O14, growth atmosphere: 100% Ar) crystals grown by the Czochralski technique in Ir crucibles along <0001> direction have been firstly investigated by neutron diffraction.
The difference between the compositions of upper (La2.935(2)□0.065)(Ga0.450Nb0.550(3))Ga3(Ga1.965(4)□0.035)(O13.90(1)□0.10) and lower (La2.940(1)□0.060)(Ga0.590Nb0.410(2))Ga5(O13.82(1)□0.18) parts of orange langanite crystal was found.
It was established that the colorless Ca3NbGa3Si2O14 crystal grown by using the single-crystal charge has the composition (Ca2.95□0.05(1))NbGa3Si2O14 and is less defective in comparison to the yellow one grown by using the charge prepared by conventional solid-state reaction.
For Ca3NbGa3Si2O14 and La3Ga5.5Nb0.5O14 crystals the possibility of microtwin formation (two unit cells connected by the translation: 1/2 z) was revealed for the first time.
It was found that the difference between the color of crystals is attributed to the qualitative differentiation of oxygen vacancies.
American Psychological Association (APA)
Kaurova, I. A.& Kuz’micheva, G. M.& Rybakov, V. B.& Cousson, A.& Zaharko, O.& Domoroshchina, E. N.. 2013. Growth and Neutron Diffraction Investigation of Ca3NbGa3Si2O14 and La3Ga5.5Nb0.5O14 Crystals. Journal of Materials،Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-453247
Modern Language Association (MLA)
Kaurova, I. A.…[et al.]. Growth and Neutron Diffraction Investigation of Ca3NbGa3Si2O14 and La3Ga5.5Nb0.5O14 Crystals. Journal of Materials No. 2013 (2013), pp.1-6.
https://search.emarefa.net/detail/BIM-453247
American Medical Association (AMA)
Kaurova, I. A.& Kuz’micheva, G. M.& Rybakov, V. B.& Cousson, A.& Zaharko, O.& Domoroshchina, E. N.. Growth and Neutron Diffraction Investigation of Ca3NbGa3Si2O14 and La3Ga5.5Nb0.5O14 Crystals. Journal of Materials. 2013. Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-453247
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-453247