Ultrasonic study on the elastic moduli of the NaTl (B32) structure |
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Authors: | K. Kuriyama S. Saito K. Iwamura |
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Affiliation: | College of Engineering, Hosei University, 3-7-2 Kajinocho, Koganei, Tokyo 184, Japan |
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Abstract: | The elastic moduli and Debye temperatures of LiAl, LiIn, LiZn, NaIn and NaTl (NaTl type: space group Fd3m) have been determined at room temperature by an ultrasonic pulse transmission technique. The trend between the isotropic bulk modulus (B) and the volume per atom pair () shows that the simple coulombic form of ion-ion interaction is not applicable to the NaTl type structure, while the semiconductor like diamond- or ZnS-, and ionic CsCl-type crystals have contributions from a coulombic attractive force. The bonding character of the NaTl structure is also discussed. |
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