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@ARTICLE{Paul:201167,
author = {Paul, Amitesh and Mattauch, Stefan},
title = {{C}hemical and magnetic profile of magnetic semiconductors
as probed by polarized neutron reflectivity},
journal = {Journal of physics / D},
volume = {43},
number = {18},
issn = {1361-6463},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2015-03472},
pages = {185002},
year = {2010},
abstract = {We investigate the depth dependence of magnetic species in
co-doped dilute magnetic semiconductor (DMS) specimens. We
also compare the reliability of the nuclear and
magnetization depth profile of these specimens on different
polarized neutron reflectivity instruments. These
reflectometers were not only angle dispersive instruments
but also wavelength dispersive instruments. Measurements
indicate a segregation of DMS species onto the top into the
cap layer for lower Fe doping. However, for higher Fe
doping, as we alter the doping concentrations of magnetic
species, no segregation and lower clustering tendencies are
indicated. Thus sensitive depth profiling, for specimens
with such low magnetic-ion concentrations, may not be a
challenge for brighter sources and careful measurements. Our
results show that homogeneity can be achieved with Fe
co-doping within a Ge matrix which can make it a potential
candidate for spintronic applications.},
cin = {JCNS-2 / PGI-4 / JARA-FIT / JCNS (München) ; Jülich
Centre for Neutron Science JCNS (München) ; JCNS-FRM-II},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
$I:(DE-82)080009_20140620$ /
I:(DE-Juel1)JCNS-FRM-II-20110218},
pnm = {422 - Spin-based and quantum information (POF2-422) / 424 -
Exploratory materials and phenomena (POF2-424) / 542 -
Neutrons (POF2-542) / 544 - In-house Research with PNI
(POF2-544) / 54G - JCNS (POF2-54G24)},
pid = {G:(DE-HGF)POF2-422 / G:(DE-HGF)POF2-424 /
G:(DE-HGF)POF2-542 / G:(DE-HGF)POF2-544 /
G:(DE-HGF)POF2-54G24},
experiment = {EXP:(DE-MLZ)MARIA-20140101 / EXP:(DE-MLZ)TREFF-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000276910500003},
doi = {10.1088/0022-3727/43/18/185002},
url = {https://juser.fz-juelich.de/record/201167},
}