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Thermodynamic theory for efficiency of multiple impurity-atom doping in diamond

✍ Scribed by Miyazaki, Takehide ;Yamasaki, Satoshi

Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 644 KB
Volume: 202
Category: Article
ISSN: 0031-8965
DOI: 10.1002/pssa.200561903

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✦ Synopsis

Abstract

We present a simple thermodynamic theory to assess the efficiency of formation of impurity‐atom complexes with various sizes in diamond at a quasi‐equilibrium state where the binding energy of the complexes is one key to formation energetics. We find that the entropy associated with distribution of the complexes in a host crystal is another key factor which competes with the binding energy to gain the free energy. If the variation in the size of the complexes is large, then the entropy‐driven free‐energy gain by small complexes is remarkable so the larger ones are relatively hard to form. Thus we propose that one should design small and tightly bound complexes in order for their selective growth. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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