TY - JOUR
T1 - Self-Diffusion in 57Fe/natFe Multilayers by In Situ Neutron Reflectometry
AU - Szilárd Sajti, Sajti
AU - Bottyán, László
AU - Moulin, Jean François
AU - Paul, Amitesh
N1 - Publisher Copyright:
© 2020, Pleiades Publishing, Ltd.
PY - 2020/10/1
Y1 - 2020/10/1
N2 - Abstract: Time-of-flight in situ neutron reflectometry (i-NR) on Si/[57Fe(x nm)/natFe(x nm)]4/Pt with x = 4 and 8 nm multilayers during consecutive heat treatments at 423, 448, 473 and 498 K reveal an unexpected rearrangement of free volumes and an interface smoothening in the isotopic Fe multilayer below 473 K, before the regime of regular Bragg intensity decay starts. The bilayer period dependence of the diffusivities at around 500 K, however, does not follow predictions of Harrison’s theory for the C-type regime representing grain boundary diffusion.
AB - Abstract: Time-of-flight in situ neutron reflectometry (i-NR) on Si/[57Fe(x nm)/natFe(x nm)]4/Pt with x = 4 and 8 nm multilayers during consecutive heat treatments at 423, 448, 473 and 498 K reveal an unexpected rearrangement of free volumes and an interface smoothening in the isotopic Fe multilayer below 473 K, before the regime of regular Bragg intensity decay starts. The bilayer period dependence of the diffusivities at around 500 K, however, does not follow predictions of Harrison’s theory for the C-type regime representing grain boundary diffusion.
KW - grain boundary diffusion
KW - in situ
KW - iron
KW - neutron reflectometry
KW - self diffusion
UR - http://www.scopus.com/inward/record.url?scp=85092135558&partnerID=8YFLogxK
U2 - 10.1134/S1027451020070460
DO - 10.1134/S1027451020070460
M3 - 文章
AN - SCOPUS:85092135558
VL - 14
SP - S1-S4
JO - Journal of Surface Investigation
JF - Journal of Surface Investigation
SN - 1027-4510
ER -