Structure and magnetism of ultrathin epitaxial Fe on Ag(100)
(2006) In Physical Review B (Condensed Matter and Materials Physics) 73(13).- Abstract
- We have made in-situ investigations of ultrathin films of Fe grown on a Ag(100) single crystal. This system is known to exhibit a reorientation of the magnetization, dependent on both Fe thickness and temperature. X-ray absorption fine structure has been recorded for samples prepared in-situ, both in the near edge and in the extended x-ray absorption fine structure (EXAFS) region. Using x-ray magnetic circular dichroism we found that Fe films between 2-5 monolayers show an out-of-plane remanent magnetization. For thicker films the magnetization lies in-plane. By applying the magneto-optical sum rules we found an enhancement of the orbital moment (m(l)) for the out-of-plane phase, whereas the spin moment (m(s)) is unchanged. From the Fe... (More)
- We have made in-situ investigations of ultrathin films of Fe grown on a Ag(100) single crystal. This system is known to exhibit a reorientation of the magnetization, dependent on both Fe thickness and temperature. X-ray absorption fine structure has been recorded for samples prepared in-situ, both in the near edge and in the extended x-ray absorption fine structure (EXAFS) region. Using x-ray magnetic circular dichroism we found that Fe films between 2-5 monolayers show an out-of-plane remanent magnetization. For thicker films the magnetization lies in-plane. By applying the magneto-optical sum rules we found an enhancement of the orbital moment (m(l)) for the out-of-plane phase, whereas the spin moment (m(s)) is unchanged. From the Fe L-edge EXAFS, we obtain information on the local crystallographic structure. A strong correlation between the local crystallographic structure and the magnetic properties is found for the Fe/Ag(100) system. Variations in the nearest neighbor distance of similar to 0.15 angstrom are observed when comparing 3 ML and 25 ML films. By comparison to simulations performed with the FEFF 8.10 code, we can identify a bcc structure for 6-25 ML Fe on Ag(100). For the 3 ML Fe film our simulations indicate strong deviations from any structure derived along the Bain path. We conclude that intermixing and distortion are important to describe the structure in this thickness range. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/410317
- author
- Hahlin, A ; Andersson, C ; Dunn, JH ; Sanyal, Biplab LU ; Karis, O and Arvanitis, Dimitri LU
- organization
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B (Condensed Matter and Materials Physics)
- volume
- 73
- issue
- 13
- publisher
- American Physical Society
- external identifiers
-
- wos:000237153800077
- scopus:33646359721
- ISSN
- 1098-0121
- DOI
- 10.1103/PhysRevB.73.134423
- language
- English
- LU publication?
- yes
- id
- 03c63602-20aa-4641-833d-75d5b210e0f2 (old id 410317)
- date added to LUP
- 2016-04-01 16:27:56
- date last changed
- 2022-03-30 08:03:37
@article{03c63602-20aa-4641-833d-75d5b210e0f2,
abstract = {{We have made in-situ investigations of ultrathin films of Fe grown on a Ag(100) single crystal. This system is known to exhibit a reorientation of the magnetization, dependent on both Fe thickness and temperature. X-ray absorption fine structure has been recorded for samples prepared in-situ, both in the near edge and in the extended x-ray absorption fine structure (EXAFS) region. Using x-ray magnetic circular dichroism we found that Fe films between 2-5 monolayers show an out-of-plane remanent magnetization. For thicker films the magnetization lies in-plane. By applying the magneto-optical sum rules we found an enhancement of the orbital moment (m(l)) for the out-of-plane phase, whereas the spin moment (m(s)) is unchanged. From the Fe L-edge EXAFS, we obtain information on the local crystallographic structure. A strong correlation between the local crystallographic structure and the magnetic properties is found for the Fe/Ag(100) system. Variations in the nearest neighbor distance of similar to 0.15 angstrom are observed when comparing 3 ML and 25 ML films. By comparison to simulations performed with the FEFF 8.10 code, we can identify a bcc structure for 6-25 ML Fe on Ag(100). For the 3 ML Fe film our simulations indicate strong deviations from any structure derived along the Bain path. We conclude that intermixing and distortion are important to describe the structure in this thickness range.}},
author = {{Hahlin, A and Andersson, C and Dunn, JH and Sanyal, Biplab and Karis, O and Arvanitis, Dimitri}},
issn = {{1098-0121}},
language = {{eng}},
number = {{13}},
publisher = {{American Physical Society}},
series = {{Physical Review B (Condensed Matter and Materials Physics)}},
title = {{Structure and magnetism of ultrathin epitaxial Fe on Ag(100)}},
url = {{http://dx.doi.org/10.1103/PhysRevB.73.134423}},
doi = {{10.1103/PhysRevB.73.134423}},
volume = {{73}},
year = {{2006}},
}