Effect of Alloying on Magnetic Breakdown in Zinc

摘要: In the course of torsion measurements1 de Haas-van Alphen periods in zinc-copper alloys, it became apparent that high-field amplitude “needle” period showed a nearly normal field dependence, contrast to anomalously low pure zinc.2 Computations have been made interpret changing dependence terms magnetic breakdown3 effects. Our results zinc are qualitative agreement with those Lawson and Gordon,2 certain quantitative differences which presumably due approach. Since breakdown effects become at about 3 kG, our range 1 30 kG wide probability, an attempt provide stringent test any theoretical interpretation. region hyperbolic sine term Lifshitz formula4 may not be replaced by exponential approximation. The computations therefore unwieldy, were carried out on IBM 709 computer. DHVA oscillations was measured three temperatures ten angles (1120) (1010) planes plane Zn-0.14 at. % Cu, Zn-0.21 %Cu alloys. computer first uses temperature amplitudes calculate effective mass, varying mass iteratively5 until equation (1) is satisfied.