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PREFERENTIAL SPUTTERING FROM Ni-Pd ALLOY AT ELEVATED TEMPERATURES

ZHANG HUI-MING ZHANG WEI-PING LU ZHAO-LUN WANG CHENG-BAO WANG ZHEN-XIA PAN JI-SHENG CHEN SHOU-MIAN ZHENG LI-PING TAO ZHEN-LAN

PREFERENTIAL SPUTTERING FROM Ni-Pd ALLOY AT ELEVATED TEMPERATURES

ZHANG HUI-MING, ZHANG WEI-PING, LU ZHAO-LUN, WANG CHENG-BAO, WANG ZHEN-XIA, PAN JI-SHENG, CHEN SHOU-MIAN, ZHENG LI-PING, TAO ZHEN-LAN
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  • Received Date:  27 April 1989
  • Published Online:  22 June 2005

PREFERENTIAL SPUTTERING FROM Ni-Pd ALLOY AT ELEVATED TEMPERATURES

  • 1. (1)杭州大学物理系,杭州,310028; (2)上海合金厂,上海,201800; (3)中国科学院上海原子核研究所,上海,201800

Abstract: Individual sputtering angular distributions and partial sputtering yields of Ni and Pd from Ni-Pd alloy have been measured at different temperatures, by using the Rutherford back-scattering spectrometry (RBS). The experimental results indicate that the partial sputtering yields of both Ni and Pd have a great change near the Curie temperature (the temperature of magnetic phase-transition of Ni-Pd alloy). Furthermore, the change of Pd partial sputtering: yield is greater than that of Ni. Ni is the preferentially sputtering element, but its preferential sputtering extent decreases during the magnetic phase-transition as taget temperature increases. The phenomena seem to be caused by the reduction of surface binding energies during the magnetic phase-transition, the surface segregation and the enhanced diffusion induced by-ion bombardment.

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