Unidirectional solidification of irregular silver-germanium eutectic alloys

Lemaignan, C.; Malmejac, Y.

doi:10.1016/0022-0248(79)90225-2

Cited by 11 publications

(11 citation statements)

References 7 publications

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“…Solving this model will prove to be a substantial achievement and will relate, for the first time, furnace growth conditions to maintaining a stable (111) growth without competing cellular growth and new grain nucleation. This achievement will immediately suggest improved growth conditions for CZT since this is the preferred growth state and cannot always be maintained during VGF seeded growth.…”

Section: Executive Summarymentioning

confidence: 99%

“…Because the (111) planes typically have the lowest surface energy, a zigzag-faceted interface bounded by (111) planes is expected to form at the SLI of rough growth planes. As one possible formation mechanism of a zigzag-faceted interface, it was considered that atomic-scale facets are initially formed, which gradually enlarge to macroscopic facets during crystallization.…”

Section: Morphological Instability Of Sli During Crystal Growthmentioning

confidence: 99%

“…This would be an important milestone in CZT growth modeling, namely the ability to predict (111) interface stability as a function of furnace growth conditions. The success of this task would suggest that other growth orientations could also be studied in this manner, such as for unseeded CZT growth.…”

Section: Executive Summarymentioning

confidence: 99%

“…According to Jackson's theory [92,93], the atomic planes or interfaces can classified using two types of interfaces. One type of interface, called facetted, such as (111) in Si and CdTe, has low interfacial energies and is usually atomistically smooth. Another type of interface, for example (100) in CdTe and Si, has higher interface energies and is usually atomistically rough.…”

Section: Morphological Instability Of Sli During Crystal Growthmentioning

confidence: 99%

“…It is recommended that a Research Direction 1 for crystal growth modeling focus on the stability during growth of a starting (111) seeded SLI for CZT. Solving this model will prove to be a substantial achievement and will relate, for the first time, furnace growth conditions to maintaining a stable (111) growth without competing cellular growth and new grain nucleation.…”

Section: Executive Summarymentioning

confidence: 99%

See 4 more Smart Citations

Simulating Interface Growth and Defect Generation in CZT – Simulation State of the Art and Known Gaps

Henager¹,

Gao²,

Hu³

et al. 2012

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Section: Executive Summarymentioning

confidence: 99%

Section: Morphological Instability Of Sli During Crystal Growthmentioning

confidence: 99%

Section: Executive Summarymentioning

confidence: 99%

Section: Morphological Instability Of Sli During Crystal Growthmentioning

confidence: 99%

Section: Executive Summarymentioning

confidence: 99%

See 3 more Smart Citations

Simulating Interface Growth and Defect Generation in CZT – Simulation State of the Art and Known Gaps

Henager¹,

Gao²,

Hu³

et al. 2012

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On the morphology of the unidirectionally solidified AgSi eutectic alloy

Chróst

Frühauf

Schmidt

1983

Cryst. Res. Technol.

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It is known that the structure of anormal eutectics occurring in the systems metal-Si, metal-Ge strongly depends on the conditions of growth -that is, on the solidification rate R and the temperature gradient G. Structures occurring in the unidirectionelly solidified Ag-Si eutectic alloy with morphology corresponding to region B according to classification adopted by HELLAWELL for the system Al-si were investigated. For the description of the morphology, three parameters were adopted : A -distance between the centres of s i crystals,

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On the morphology of <100>‐textured Germanium Crystallites in Zn—Ge Eutectic Alloy

Vetter¹,

Frühauf²,

Schneider³

1984

Cryst. Res. Technol.

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Different geometry parameters for the crcss-like germanium crystallites (eutectic dendrites) of the Zn-Ge eutectic alloys unidirectionally solidified have been related t o the growth rate R and liquid temperature gradient G using linear regression analysis. It has been found that for eutectic dendrite spacing 1, balk length d and balk thickness b follow the relationship of the type w = C,R-rwG-gw; C , is a constant. The spacing relationship of eutectic dendrites (rA = 0.21; gA = 0.48) shows a similarity with published experimental and theoretical results on primary dendrite arm spacing ( T~ = 0.25; gi = 0.5). It has been shown in terms of a profile ratio Aid t h a t for geometrical similar morphologies the relationship A2R = const. is valid.Fur verschiedene Geometrieparameter der kreuzformigen Germaniumkristallite (eutektische Dendriten) der gerichtet erstarrten eutektischen Zn-Ge-Legierung wurden die funktionellen Abhiingigkeiten von der Wachstumsrate R und dem Teniperaturgradienten in der Schmelze G mittels h e a r e r Regression ermittelt. Es wurde gefunden, da13 der Abstand der eutektischen Dendriten 1, die Balkenlange d und die Balkendicke b durch die Beziehung w = C,R-rwG-gw beschrieben werden konnen; C , ist eine Konstante. Die Exponenten der Beziehung fur den Abstand der eutektischen Dendriten (rl = 0,21; gA = 0,48) sind veroffentliehten experimentellen und theoretischen Exponenten der Beziehungen fur den Abstand der Primiirstamme von Dendriten iihnlich (rA = 0,25; gA = 0,5). Mittels des Ahnlichkeitsparameters 1/d konnte gezeigt werden, da13 fur geometrisch ahnliche Morphologien die Beziehung A2R = const. gultig ist.

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Unidirectional solidification of irregular silver-germanium eutectic alloys

Cited by 11 publications

References 7 publications

Simulating Interface Growth and Defect Generation in CZT – Simulation State of the Art and Known Gaps

Simulating Interface Growth and Defect Generation in CZT – Simulation State of the Art and Known Gaps

On the morphology of the unidirectionally solidified AgSi eutectic alloy

On the morphology of <100>‐textured Germanium Crystallites in Zn—Ge Eutectic Alloy

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