Monitoring an insulator-metal transition in icosahedral AlPdRe by neutron irradiation

• The intrinsic disorder effect on the electrical resistivity and magnetoresistance (MR) of icosahedral AlPdRe is studied by use of high-energy neutron irradiation. The icosahedral phase is preserved under irradiation with a decrease of x-ray peak intensity and volume of the coherent icosahedral phase. An insulator-metal transition, as observed in the MR, can be driven by the irradiation and is monitored by the resistance ratio R[=rho(4.2 K)/rho(295 K)]. The relation of MR vs R was found to be similar for samples of a widely different history.

Nyckelord

al-pd-re

quasi-crystals

conductivity

behavior

alloys

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ref (ämneskategori)

art (ämneskategori)