SPIN-POLARIZED NEUTRON REFLECTION STUDIES OF EPITAXIAL-FILMS
The application of polarised neutron reflection (PNR) to investigations of the static magnetic properties of ultrathin epitaxial films is discussed. PNR yields the absolute value of the magnetic moment per atom of sandwiched monolayer thickness films with high accuracy, while in contrast with SQUID...
| Main Authors: | , , , , , , |
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| Format: | Conference item |
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1991
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| _version_ | 1797091928612798464 |
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| author | Bland, J Johnson, A Lauter, H Bateson, R Blundell, S Shackleton, C Penfold, J |
| author_facet | Bland, J Johnson, A Lauter, H Bateson, R Blundell, S Shackleton, C Penfold, J |
| author_sort | Bland, J |
| collection | OXFORD |
| description | The application of polarised neutron reflection (PNR) to investigations of the static magnetic properties of ultrathin epitaxial films is discussed. PNR yields the absolute value of the magnetic moment per atom of sandwiched monolayer thickness films with high accuracy, while in contrast with SQUID magnetometry for example, no magnetic signal requiring correction arises due to the substrate. PNR also provides valuable information relating to the interface quality. The roughness amplitude and correlation length can be estimated from the specular reflectivity and the angular width of the diffusely reflected beam respectively. We discusse the observed dependence of the magnetisation upon the transition metal layer thickness in the 1-10 ML range for Ag/Fe/Ag(001), Ag/Co/Ag(001), Cu/Co/Cu(001) and Ag/Cr/Ag(001) sandwich structures as an illustration of PNR as a magnetometric technique. The sensitivity of the wavevector-dependent reflectivity to the layer dependent magnetisation is illustrated by our recent investigations of sputtered Fe/Cr/Fe layers in the antiparallel coupling regime and of a 'thick' bcc Co/GaAs(001) film. © 1991. |
| first_indexed | 2024-03-07T03:39:20Z |
| format | Conference item |
| id | oxford-uuid:bd58031e-6148-4b34-ac23-f5cd41a0707d |
| institution | University of Oxford |
| last_indexed | 2024-03-07T03:39:20Z |
| publishDate | 1991 |
| record_format | dspace |
| spelling | oxford-uuid:bd58031e-6148-4b34-ac23-f5cd41a0707d2022-03-27T05:31:08ZSPIN-POLARIZED NEUTRON REFLECTION STUDIES OF EPITAXIAL-FILMSConference itemhttp://purl.org/coar/resource_type/c_5794uuid:bd58031e-6148-4b34-ac23-f5cd41a0707dSymplectic Elements at Oxford1991Bland, JJohnson, ALauter, HBateson, RBlundell, SShackleton, CPenfold, JThe application of polarised neutron reflection (PNR) to investigations of the static magnetic properties of ultrathin epitaxial films is discussed. PNR yields the absolute value of the magnetic moment per atom of sandwiched monolayer thickness films with high accuracy, while in contrast with SQUID magnetometry for example, no magnetic signal requiring correction arises due to the substrate. PNR also provides valuable information relating to the interface quality. The roughness amplitude and correlation length can be estimated from the specular reflectivity and the angular width of the diffusely reflected beam respectively. We discusse the observed dependence of the magnetisation upon the transition metal layer thickness in the 1-10 ML range for Ag/Fe/Ag(001), Ag/Co/Ag(001), Cu/Co/Cu(001) and Ag/Cr/Ag(001) sandwich structures as an illustration of PNR as a magnetometric technique. The sensitivity of the wavevector-dependent reflectivity to the layer dependent magnetisation is illustrated by our recent investigations of sputtered Fe/Cr/Fe layers in the antiparallel coupling regime and of a 'thick' bcc Co/GaAs(001) film. © 1991. |
| spellingShingle | Bland, J Johnson, A Lauter, H Bateson, R Blundell, S Shackleton, C Penfold, J SPIN-POLARIZED NEUTRON REFLECTION STUDIES OF EPITAXIAL-FILMS |
| title | SPIN-POLARIZED NEUTRON REFLECTION STUDIES OF EPITAXIAL-FILMS |
| title_full | SPIN-POLARIZED NEUTRON REFLECTION STUDIES OF EPITAXIAL-FILMS |
| title_fullStr | SPIN-POLARIZED NEUTRON REFLECTION STUDIES OF EPITAXIAL-FILMS |
| title_full_unstemmed | SPIN-POLARIZED NEUTRON REFLECTION STUDIES OF EPITAXIAL-FILMS |
| title_short | SPIN-POLARIZED NEUTRON REFLECTION STUDIES OF EPITAXIAL-FILMS |
| title_sort | spin polarized neutron reflection studies of epitaxial films |
| work_keys_str_mv | AT blandj spinpolarizedneutronreflectionstudiesofepitaxialfilms AT johnsona spinpolarizedneutronreflectionstudiesofepitaxialfilms AT lauterh spinpolarizedneutronreflectionstudiesofepitaxialfilms AT batesonr spinpolarizedneutronreflectionstudiesofepitaxialfilms AT blundells spinpolarizedneutronreflectionstudiesofepitaxialfilms AT shackletonc spinpolarizedneutronreflectionstudiesofepitaxialfilms AT penfoldj spinpolarizedneutronreflectionstudiesofepitaxialfilms |