Model modification for calculating lattice volume and size dependent melting temperature of solid nanoparticles
Other Title(s)
تعديل نموذج لحساب الحجم الشبيكي و الحجم المعتمد على درجة حرارة انصهار النانوية الصلبة
Dissertant
Thesis advisor
Comitee Members
Said, Salah R.
Taha, Hawkar T.
Fathi, Sabah J.
University
Salahaddin University-Hawler
Faculty
College of Science
Department
Physics Department
University Country
Iraq
Degree
Master
Degree Date
2012
English Abstract
Melting of solids has been investigated in respect with their core electron concentration.
It was found a systematic decrease of melting for groups III, IV, and V with increasing of their core electron concentration except for group elements.
Five models for calculating nanoparticles size dependence melting point were investigated, among them, the Shi-Jiang’s model is found to be the best in comparison with that of the experimental data taken from references.
The Shi-Jiang model is re-derived with the effect of lattice volume of nanoparticles size dependent melting point.
Depending on the models been reported for lattice volume dependence on nanoparticles size for Si, models were derived for nine elements, investigated among groups mentioned above and CdS.
The derived size dependent model was used to calculate the nanoparticles size dependent melting point elements of metals, semiconductors and CdS.
A systematic dependence were found for both the melting entropy Sm and S vib vibrational entropy for elementary solids versus Tm, and also mean bonding length d mean versus the materials surface layer inter-planer distance b.
Main Subjects
Topics
No. of Pages
68
Table of Contents
Table of contents.
Abstract.
Chapter One : general introduction.
Chapter Two : melting in solids.
Chapter Three : lattice volume and the nanoparticles melting point of solids.
Chapter Four : conclusion and suggestion.
References.
American Psychological Association (APA)
Rauf, Nssar Abd al-Salam. (2012). Model modification for calculating lattice volume and size dependent melting temperature of solid nanoparticles. (Master's theses Theses and Dissertations Master). Salahaddin University-Hawler, Iraq
https://search.emarefa.net/detail/BIM-314365
Modern Language Association (MLA)
Rauf, Nssar Abd al-Salam. Model modification for calculating lattice volume and size dependent melting temperature of solid nanoparticles. (Master's theses Theses and Dissertations Master). Salahaddin University-Hawler. (2012).
https://search.emarefa.net/detail/BIM-314365
American Medical Association (AMA)
Rauf, Nssar Abd al-Salam. (2012). Model modification for calculating lattice volume and size dependent melting temperature of solid nanoparticles. (Master's theses Theses and Dissertations Master). Salahaddin University-Hawler, Iraq
https://search.emarefa.net/detail/BIM-314365
Language
English
Data Type
Arab Theses
Record ID
BIM-314365
