A sessile drop approach for studying 4H-SiC/liquid silicon high-temperature interface reconstructions - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Materials Science Année : 2022

A sessile drop approach for studying 4H-SiC/liquid silicon high-temperature interface reconstructions

Résumé

Accurate description, understanding and control of the high temperature interface behavior between the SiC single crystal and liquid phase is critical for further development of SiC solution growth. The different parameters which create morphological instabilities, such as step bunching, micro-faceting and solvent trapping, remain unclear because they are very difficult to address in high temperature experiments. We combined experiments and numerical simulation to design a specific sessile drop approach where the liquid is removed before cooling down. The advantage of this method that it activates or suppresses the solute (carbon) transport by an AC magnetic field and thus separates the physical–chemical and hydrodynamic contributions. The method was demonstrated through observation of the morphological evolution of a 4°off 4H-SiC (0001) surface in contact with pure liquid silicon at 1600 °C according to the time factor. Several parasitic effects were also analyzed and suppressed in order to obtain a well-controlled uniform interface.
Fichier principal
Vignette du fichier
220106_Manuscript_A sessile drop approach for studying_HAL.pdf (6.49 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03515056 , version 1 (06-01-2022)

Identifiants

Citer

Xinming Xing, Takeshi Yoshikawa, Olga Budenkova, Didier Chaussende. A sessile drop approach for studying 4H-SiC/liquid silicon high-temperature interface reconstructions. Journal of Materials Science, 2022, ⟨10.1007/s10853-021-06816-y⟩. ⟨hal-03515056⟩
74 Consultations
30 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More