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    STUDIA PHYSICA - Issue no. 2 / 2001  
         
  Article:   THERMAL DIFFUSIVITY STUDY ON IRON CONTAINING CAO-P2O5-SIO2 GLASSES AND GLASS CERAMICS.

Authors:  VIORICA SIMON, D. DADARLAT, A. PAŞCA, S. SIMON.
 
       
         
  Abstract:  Standard photopyroelectric (SPPE) measurements were carried out in order to obtain the thermal diffusivity, , for 45(3.34 CaOP2O5)(55-x)SiO2xFe2O3 glass and glass-ceramic samples with 0  x  30 mol %. The room temperature values of the thermal diffusivity in the above mentioned composition range are 0.4110-6    2.3310-6 m2/s. Vitroceramic samples obtained by heat treatment present a similar behaviour of the thermal diffusivity with that of the untreated samples. The temperature dependence (T) in the range of interest (10 65oC) indicates a linear decrease of  with a slope of 10-8 m2/s /degree.  
         
     
         
         
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