Artículos de revistas
Evolution of the quadrupole hyperfine interaction while milling a Si-HfO2? blend Original Research Article
Fecha
2012-09Registro en:
Chain, Cecilia Yamil; Ferrari, Sergio; Damonte, Laura Cristina; Martinez, J. A.; Pasquevich, A. F.; Evolution of the quadrupole hyperfine interaction while milling a Si-HfO2? blend Original Research Article; Elsevier Science; Journal of Alloys and Compounds; 536; Supl. 1; 9-2012; 50-54
0925-8388
CONICET Digital
CONICET
Autor
Chain, Cecilia Yamil
Ferrari, Sergio
Damonte, Laura Cristina
Martinez, J. A.
Pasquevich, A. F.
Resumen
As HfO2 appears as a good candidate to replace SiO2 in Si complementary metal-oxide-semiconductor devices, a refined knowledge of the possible solid-state reactions between Si and HfO2 is valuable. Being the Perturbed Angular Correlations technique a very sensitive method to detect small changes in solid state, the goal of this work is to follow the different stages that occur while ball milling a blend Si-HfO2 by inspecting the hyperfine quadrupole interaction at Hf sites. The characterization is complemented by X-ray diffraction analysis. For comparison, a similar study on pure m-HfO2 is carried out. The results seem to reveal a gradual incorporation of Si in a tetragonal defective phase of hafnia with milling time. In addition, the formation of precursor arrays of the HfSiO4 structure takes place. After an annealing at 1000 °C an important amount of crystalline hafnon appears.