Growth of Ga(1−x)InxSb alloys by Vertical Bridgman technique under alternating magnetic field

Mitric, A.; Duffar, T.; Dı́az-Guerra, C.; Corregidor, V.; Alves, L.C.; Garnier, C.; Vian, G.

doi:10.1016/j.jcrysgro.2005.10.101

Cited by 30 publications

(26 citation statements)

References 11 publications

(14 reference statements)

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“…The obtained dopant concentration distribution along the crystals shows some oscillations of the ions concentration. This behavior have been also observed for other crystals grown by Bridgman technique and was not explained yet [3,9].…”

Section: Resultsmentioning

confidence: 59%

Segregation coefficient of Yb3+ and Yb2+ ions in YbF3 doped BaF2 crystals

Nicoarǎ¹,

Buşe²,

Bunoiu³

2014

AIP Conference Proceedings

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Abstract. BaF 2 :0.17 mol%YbF 3 crystal was grown using the conventional Bridgman technique. The optical absorption spectra reveal the existence of both Yb 2+ and Yb 3+ ions with the characteristic bands of the trivalent ions in the near-IR region and of the divalent ions in the UV spectral domain. The concentration distribution of the Yb 2+ and Yb 3+ ions among the sample was investigated using the optical absorption method. The segregation coefficient of the two types of Yb ions has been determined. From our calculations the segregation coefficient of the Yb 3+ ions in BaF 2 host is ≈ 0.7, and of the Yb 2+ ions is ≈ 0.6.

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Section: Resultsmentioning

confidence: 59%

Segregation coefficient of Yb3+ and Yb2+ ions in YbF3 doped BaF2 crystals

Nicoarǎ¹,

Buşe²,

Bunoiu³

2014

AIP Conference Proceedings

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“…The dopant distribution along the crystals shows some oscillations of the Pb 2+ -ions concentration. These types of oscillations have been also observed for other crystals grown by the Bridgman technique; this behavior has not been explained yet [16,17]. For concentrations ≤ 1 mol% the absorption coefficient increases along the crystals and consequently, the concentration increases, too.…”

Section: Determination Of the Effective Segregation Coefficient Of Pbmentioning

confidence: 78%

Distribution of Pb²⁺Ions in PbF₂-Doped CaF₂Crystals

et al. 2010

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Calcium fluoride crystals doped with various concentrations of PbF 2 have been grown using the Bridgman technique. The optical absorption spectra reveal the characteristic UV absorption bands of the Pb 2+ ions. The distribution of the Pb 2+ -ions along four crystals has been investigated using the optical absorption method. Taking into account the relationship between the optical absorption coefficient and the concentration of the impurities in the samples, the effective segregation coefficient of the Pb 2+ ions has been calculated. Our study shows that the effective segregation coefficient of the Pb 2+ ions in CaF 2 host depends on the dopant concentration, and varies between 0.85 and 1.15, for 0.5 mol%PbF 2 and 3 mol%PbF 2 -doped CaF 2 , respectively.

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“…The use of an alternating magnetic field located in the vicinity of the solid-liquid interface [3], of an internal baffle moving at a constant distance from the interface [4] or the double crucible Czochralski technique [5] have been proposed with the aim of preserving the characteristic of the liquid (concentration, temperature) in a thin layer close to the Solid/Liquid interface, allowing to improve the materials homogeneity. With these methods, most of the melt is used as a feed for the thin liquid layer and a special design is required to limit the interactions between the thin layer and the remaining melt [6].…”

Section: Principle Of Feeding Techniquesmentioning

confidence: 99%

Technical Developments and Principal Results of Vertical Feeding Method for GaSb and GaInSb Alloys

Vincent¹,

Dı́az-Guerra²,

Piqueras³

et al. 2007

AIP Conference Proceedings

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Abstract. In this work, the experimental set-up of the Vertical Feeding Method (VFM) which has been used for the preparation of GaSb and GaInSb materials is presented. The different elements of the set-up are detailed as well as the preparation process. The different configurations that have been used for material production are briefly described and the principal results are summarized. In the case of Te-doped GaSb materials, the study, focused on the grain size and structure of the as-grown materials, showed that single crystals can be obtained with the VFM. In the case of GaInSb materials, the study, focused on the spatial indium distribution in the solid phase prepared with the different VFM configurations, showed that an effective band edge reduction can be achieved.

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Growth of Ga(1−x)InxSb alloys by Vertical Bridgman technique under alternating magnetic field

Cited by 30 publications

References 11 publications

Segregation coefficient of Yb3+ and Yb2+ ions in YbF3 doped BaF2 crystals

Segregation coefficient of Yb3+ and Yb2+ ions in YbF3 doped BaF2 crystals

Distribution of Pb²⁺Ions in PbF₂-Doped CaF₂Crystals

Technical Developments and Principal Results of Vertical Feeding Method for GaSb and GaInSb Alloys

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Growth of Ga(1−x)InxSb alloys by Vertical Bridgman technique under alternating magnetic field

Cited by 30 publications

References 11 publications

Segregation coefficient of Yb3+ and Yb2+ ions in YbF3 doped BaF2 crystals

Segregation coefficient of Yb3+ and Yb2+ ions in YbF3 doped BaF2 crystals

Distribution of Pb2+Ions in PbF2-Doped CaF2Crystals

Technical Developments and Principal Results of Vertical Feeding Method for GaSb and GaInSb Alloys

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Distribution of Pb²⁺Ions in PbF₂-Doped CaF₂Crystals