Dissipative structure formation in cold-rolled Fe and Ni during heavy ion irradiation

TL;DR

This study investigates how heavy ion irradiation induces atomic rearrangements and dissipative structure formation in cold-rolled Fe and Ni, revealing resistivity changes linked to internal interface dynamics at 300K.

Contribution

It demonstrates the formation of dissipative structures in Fe and Ni during heavy ion irradiation, connecting resistivity behavior to atomic rearrangements at internal interfaces.

Findings

Resistivity increases and saturates with irradiation dose.

Atomic rearrangements are driven by energy dissipation at internal interfaces.

Resistivity jumps indicate structural transitions.

Abstract

We report 4-probe resistivity measurements of cold-rolled Ni and Fe during 100 MeV oxygen ion irradiation, at 300K. The resistivity shows increase and saturation, marked by jumps. Employing 200 MeV silver ion irradiation of Fe and Si(100) and topographically identifying strain at an artificial interface in the latter, we assign the resistivity behavior to atomic rearrangements arising from dissipation of incident ion energy at internal interfaces of Ni and Fe, with positive feedback.}