470
Y. Yoshida
Fig. 9.23 High temperature Mössbauer Spectra in (a) γ-phase, and (b) δ-phase. Notice that the
velocity scale for δ-phase is a factor of 20 larger than that of γ-phase (Reprinted figure with
permission from [42], ©IOP publishing. Reproduced with permission. All right reserved)
1623 K. The line broadenings are due to the atomic jumps of
57 Fe atoms within
the lifetime, i.e., self-diffusion in δ-phase. Since the line broadening, , which is
shown as a function of temperature in Fig. 9.24, is related to the jump frequency, 1/τ,
we can deduce the diffusion coefficient, D, using the following formula [27]:
Fig. 9.24 Line broadening
of Mössbauer resonance in
Fe self-diffusion. Reprinted
figure with permission from
[42] ©IOP publishing.
Reproduced with permission.
All right re-served
Y. Yoshida
Fig. 9.23 High temperature Mössbauer Spectra in (a) γ-phase, and (b) δ-phase. Notice that the
velocity scale for δ-phase is a factor of 20 larger than that of γ-phase (Reprinted figure with
permission from [42], ©IOP publishing. Reproduced with permission. All right reserved)
1623 K. The line broadenings are due to the atomic jumps of
57 Fe atoms within
the lifetime, i.e., self-diffusion in δ-phase. Since the line broadening, , which is
shown as a function of temperature in Fig. 9.24, is related to the jump frequency, 1/τ,
we can deduce the diffusion coefficient, D, using the following formula [27]:
Fig. 9.24 Line broadening
of Mössbauer resonance in
Fe self-diffusion. Reprinted
figure with permission from
[42] ©IOP publishing.
Reproduced with permission.
All right re-served