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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/023/03/0201-0206

    • Keywords

       

      TDPAC ; electric field gradient ; Hf solute clusters ; helium-vacancy complex ; defect recovery

    • Abstract

       

      Time differential perturbed angular correlation (TDPAC) measurement onAlHf reference sample has shown that a fraction 0.88 of probe nuclei are defect free and are occupying the substitutional sites in fcc Al matrix, and the remaining are associated with Hf solute clusters. Measurements on helium implanted sample indicate the binding of helium associated defects by Hf solute clusters. Isochronal annealing measurements indicate the dissociation of the helium implantation induced defects from Hf solute clusters for annealing treatments beyond 650 K. On comparison of the present results with that reported inCuHf subjected to identical helium implantation, it is inferred that the Hf solute clusters inAlHf bind less strongly the helium associated defects than inCuHf.

    • Author Affiliations

       

      R Govindaraj1 K P Gopinathan1 2 B Viswanathan1

      1. Materials Science Division, Indira Gandhi Centre for Atomic Research, Kalpakkam - 603 102, India
      2. Department of Physics, Cochin University of Science and Technology, Cochin - 682 022, India

    • Dates

       
      Published
      June 2000
      Manuscript received
      22 June 1999
      Manuscript revised
      6 March 2000

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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