X-RAY DIFFRACTION IN METALS : Lattice Strain and Debye-Waller Factors

ISBN-13: 9786200589385 / Angielski

Madhusudhan Rao A.S

Opis

The Debye-Waller factors and Debye temperatures of crystals are parameters of lattice dynamical interest. The experimental determination of these parameters by the X-ray diffraction technique is the objective of this work. A systematic study on the effect of lattice strain on the Debye-Waller factors of strained copper powders constitutes the theme of this experimental work. Strain is produced in copper by repeated grinding. After each spell of grinding, the X-ray diffractogram is recorded. The lattice strain and Debye-Waller factors are determined from the half widths and integrated intensities of the Bragg reflections. From the Debye-Waller factors the Debye temperatures of strained copper powders have been determined. From a relation between X-ray Debye temperature and the vacancy formation energy, the vacancy formation energy of copper as a function of lattice strain has been determined.

O autorze

A.S, Madhusudhan Rao
Dr. A.S. Madhusudhan Rao is an astute professional in Physics with 27 years of experience in teaching Physics & Electronics. A committed researcher with more than 15 years of experience in research in the fields of Experimental Physics, Solid State Physics, Condensed Matter Physics and Material Science and mentored many students in the research.