Changes in resistivity and structural state of Zn single crystals under low-temperature cycling

M.E.Bosin, F.F.Lavrent'ev*, V.N.Nikiforenko*


Kharkiv State Polytechnical University, 21 Frunze str., 61002, Kharkiv, Ukraine
*B.Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 47 Lenin Ave., 61164 Kharkiv, Ukraine

Received March 29, 1999

Using Zn single crystals as an example, it has been shown that low-temperature cycling treatment (LTCT) influences the structural state and additional resistivity (DELTA R) of this metal. It has been established that with increasing the thermocycle number up to betacc = 5 a marked increase of the basal dislocation density in (0001)< 11-20 > system takes place. The low-angle boundaries have been shown to be formed already after 3 thermocycles. An influence of the thermocycle number on the DELTA R value has been found. Structure investigations during the LTCT allow to assume that DELTA R change at betacc = 3 is associated mainly with a contribution of low-angle tilt boundaries.

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