A note on the elastic constants of sodium bromate from 350 K to 77 K |
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| Authors: | K R Srinivasan E S R Gopal |
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| Affiliation: | (1) Physics Department, Indian Institute of Science, 560012 Bangalore;(2) C.E.D.T. ECE Department, Indian Institute of Science, 560012 Bangalore |
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| Abstract: | The elastic constantsC 11,C 12 andC 44 of sodium bromate single crystals have been evaluated using 10 MHz ultrasonic pulse echo superposition technique. The values areC 11=5.578,C 12=1.075,C 44=1.510 (×1010 N/m2) at 290 K and 6.35, 1.98 and 1.65 (×1010 N/m2) at 77 K. The present room temperature values agree closely with the recent values of Gluyaset al. but the other earlier measurements show some scatter. A comparison between the elastic constants of sodium bromate and sodium chlorate is also made. |
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| Keywords: | Elastic constant sodium bromate ultrasonic velocity |
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