DSC - C ALORIMETRIC STUDIES 0f S ILVER INTERCALATED...

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CALORIMETRIC STUDIES 0 f SILVER INTERCALATED TITANIUM DISULPHIDE GARY M. JACKLE B.Sc., Simon Fraser University, 1980 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE in the Department 0 f Physics Gary M. Jackle 1985 SIMON FRASER UNIVERSITY December 1985 All rights reserved. This work may not be reproduced in whole or in part, by photocopy or other means, without permission of the author.
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APPROVAL Name : Degree : Title of Thesis: Gary M. Jackle Master of Science Calorimetric Studies of Silver Intercalated Titanium Disulphide Examining Committee: Chairman: K. S. Viswanathan J. C. Irwin Senior Superv isor R. F. Frindt I n. 61 irchke External Exam iner Physics Department, SFU Date Approved: December 20, 1985
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PARTIAL COPYRIGHT LICENSE I hereby grant t o Simon Fraser U n i v e r s i t y the r i g h t t o lend my thesis, p r o j e c t o r extended essay ( t h e t i t l e o f which i s shown below) t o users o f the Simon Fraser University Library, and t o make p a r t i a l o r s i n g l e copies only f o r such users o r i n response t o a request from the l i b r a r y o f any other university, o r other educational i n s t i t u t i o n , on i t s own behalf o r f o r one o f i t s users. I f u r t h e r agree t h a t permission f o r m u l t i p l e copying o f t h i s work f o r scholarly purposes may be granted by me o r the Dean o f Graduate Studies. I t i s understood t h a t copying o r p u b l i c a t i o n o f t h i s work f o r f i n a n c i a l g a i n shall not be allowed without my w r i t t e n permission. T i t l e o f Thesis/Project/Extended Essay CALORIMETRIC STUDIES OF SILVER 4 INTERCALATED TITANIUM DISULPHIDE Author: GARY 3ACKLE \ (name 1 4 / 9 B L (date)
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ABSTRACT The order-disorder transition of the silver atoms in the intercalation compound Ag TiS has been x 2 investigated using differential scanning calorimetry. Measurements were carried out for silver concentrations in the range 0 < x 0.5 and for temperatures in the region 150 K < T < 650 K. The AgxTiS2 samples used in this work were prepared by thermally intercalating Ag into TiS powders. The intercalated powders were 2 4 calibrated using X-ray fluorescence and X-ray diffraction techniques. Values obtained for the critical temperature Tc were in good agreement with previously reported results and there was no measurable hysteresis in the transition. The la-tter result is consistent with the predicted second order nature of the transition. Results were also obtained for the specific heat of pure TiS and for the intercalation 2 b compounds Ag TiS The measured variation of the x 2 ' specific heat of the AgxTiS2 samples near Tc has been compared to the predictions of a two-dimensional theoretical model. iii
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TABLE OF CONTENTS PAGE CHAPTER 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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