20 a nd overfill in stage 1 t o 042 5 5 a specific

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Unformatted text preview: istics of the equipment when running multiple repetitive scans ( -such a s the build up of frost on the cooling equipment). The specific heat of pure T iS 2 w as calculated from the a verage measured difference between three consecutive heating-cooling scans using equation 5 -2. Page - 5 6 - - s pecific heat of the s a m p l e material ( w h e n r u n a g a i n s t a n empty pan identical to the pan c o n t a i n i n g t h e sample). E - c ell calibration coefficient ( mcal/mv). Y - y -axis- range s e t t i n g ( m v / c m ) m ' dy M - h eating r a t e ( K/min). m 5 -5 y -axis deflection (cm). - m ass of t h e sample ( g m ) ( c ) Specific Heat o f P u r e T i S 2 T h e specific heat of the pure T i S o ver the temperature range 180 K 2 s a m p l e w a s determined 360 K . - measurements are s h o w n in F i g . 2 3. specific heat o f T i S 2 T h e results of the T h e values of the d etermined i n this work are slightly h igher than the values reported by T o d d and Coughlin ( 66), p ossibly d u e to a n error in t h e determination of the cell calibration coefficient E o f e q u a t i o n 5 - 2 . 5 - 5 ( d) S pecific' H e a t o f A g T i S x 2 T h e specific heats of t h e s i l v e r intercalated T i S s amples were determined in the s a m e manner a s pure T i S value of the s p e c i f i c heat for T i S 2 2 2 The ' w a s subtracted from t hc v alues determined for the A g T i S s a m p l e s resulting in the x 2 P age - 56aF igure 23 S pecific h eat o f T iS + + 2 v ersus temperature. 4 4 data from ref. ( 6 6 ) ~ e m ~ e r a t u r K) (e P a g e - 57n et contribution to the specific heat due to the amount of silver residing in the s a m p l e . T h e contribution to the specific heat due to the silver intercalate is plotted as a f unction of the mole fraction ( x) o f intercalate in F i g . 2 4 . T he p lot F i g . 2 4 s hows the steady increase in C f raction ( x ) i ncreases from between x x = 0.50. = 0.25 0 as the mole m 0 . 2 5 w ith an change in slope - - 0 . 3 0 , t hen increasing from x = 0.30 to T he transition in the specific heat shown in Pig. 2 4 f or x = 0.25 0.30 - o ccurs in the...
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This note was uploaded on 10/08/2009 for the course CME MAT E 630 taught by Professor Dr. during the Fall '09 term at University of Alberta.

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