- Tytuł:
- Extended X-Ray Absorption Fine Structure Studies of Co Doped ZnS and ZnSe Alloys
- Autorzy:
-
Ławniczak-Jabłońska, K.
Gołacki, Z. - Powiązania:
- https://bibliotekanauki.pl/articles/1931712.pdf
- Data publikacji:
- 1994-11
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
61.10.Lx
78.70.Dm
87.64.Fb - Opis:
- X-ray absorption experiments were performed at the Kedge of Co and Zn in Zn$\text{}_{1-x}$Co$\text{}_{x}$S and Zn$\text{}_{1-n}$Co$\text{}_{x}$Se compounds with x = 0.25, 0.16, 0.10, 0.05, 0.00 in the sulphides samples and x = 0.07, 0.02, 0.00 in the selenide ones. Analysis of the extended X-ray absorption fine structure oscillations using phase and amplitudes either from McKale code or from standard samples, gave the distance, number of atoms and the Debye-Waller factors for nearest neighbours. We found that the cation-anion distances Zn-S(Se) or Co-S(Se) are systematically shorter in ZnS than in ZnSe matrix, the Zn-anion distance is always larger than the Co-anion one without any significant Co content dependence. This allowed us to estimate the covalent radius of Co in the studied matrices to be 0.025 Å smaller than the Zn covalent radius and stated that covalent radius of Co is independent of the type of surrounding atoms. In addition the Debye-Waller factors indicated a better ordering in ternary compounds than in the binary standard ones in agreement with rocking curve measurements.
- Źródło:
-
Acta Physica Polonica A; 1994, 86, 5; 727-735
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł