Peculiarities of the track formation in InP and GaAs crystals

A new nanoporous material based on amorphous silicon dioxide

“…Thus, for a bismuth dose of 5 × 10 10 cm -2 , ≈ D 0 . Investigations of poly mers, alkali halide crystals, and semiconductors A 3 B 5 have shown that ion tracks in solids consist of narrow cores surrounded by defective halos [19][20][21][22]. Since a the halos are highly defective, the etching rate in the region of a halo should be higher than the undamaged bulk etching rate.…”

Swift heavy ion induced structural evolution in InP

“…The inelastic TSM suggests that high energy ions transfer their energy to the target electrons. Subsequently the energy is transferred to the lattice atoms via electron-phonon coupling [1,6,7,9,11,17,18]. This eventually results in an increase in the lattice temperature.…”

“…The coupled differential equations of heat flow in a cylindrical geometry are given below where, T e (r,z,t) and T a (r,z,t) are the electronic and the atomic temperatures, respectively [6,9,17,18]. …”

“…(5), the only free parameter in the expression for g is n e . The electronic energy loss as a function of depth ε e (z) is incorporated in A(r,z,t) as [6,9], Aðr; z; tÞ ¼ a exp À ðt À t 0 Þ 2 2t 2 0 ! Fðr; zÞ;…”

“…(9), simulation requires the values of t 0 (deposition time) and r 0 (the radius of the cylinder in which the nuclear energy is deposited). It is generally accepted that the atomic motion of the target atoms on SHI irradiation occurs on a time scale of 10 À13 e10 À12 s [43].…”