Magnetic ordering in Cr-doped Bi₂Se₃ thin films
We report the structural and magnetic study of Cr-doped Bi2Se3 thin films using x-ray diffraction (XRD), magnetometry and polarized neutron reflectometry (PNR). Epitaxial layers were grown on c-plane sapphire by molecular beam epitaxy in a two-step process. Highresolution XRD shows the exceptionally...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Journal article |
| Jezik: | English |
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European Physical Society
2014
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| _version_ | 1826270344160215040 |
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| author | Collins-Mcintyre, LJ Harrison, SE Schoenherr, P Steinke, N-J Kinane, CJ Charlton, TR Alba-Veneroa, D Phusp, A Kellock, AJ Parkin, SSP Harris, JS Langridge, S van der Laan, G Hesjedal, T |
| author_facet | Collins-Mcintyre, LJ Harrison, SE Schoenherr, P Steinke, N-J Kinane, CJ Charlton, TR Alba-Veneroa, D Phusp, A Kellock, AJ Parkin, SSP Harris, JS Langridge, S van der Laan, G Hesjedal, T |
| author_sort | Collins-Mcintyre, LJ |
| collection | OXFORD |
| description | We report the structural and magnetic study of Cr-doped Bi2Se3 thin films using
x-ray diffraction (XRD), magnetometry and polarized neutron reflectometry (PNR). Epitaxial
layers were grown on c-plane sapphire by molecular beam epitaxy in a two-step process. Highresolution XRD shows the exceptionally high crystalline quality of the doped films with no parasitic
phases up to a Cr concentration of 12% (in % of the Bi sites occupied by substitutional Cr).
The magnetic moment, measured by SQUID magnetometry, was found to be ∼2.1 μB per Cr
ion. The magnetic hysteresis curve shows an open loop with a coercive field of ∼10 mT. The
ferromagnetic transition temperature was determined to be 8.5 K analyzing the magnetizationtemperature gradient. PNR shows the film to be homogeneously ferromagnetic with no enhanced
magnetism near the surface or interface. |
| first_indexed | 2024-03-06T21:39:21Z |
| format | Journal article |
| id | oxford-uuid:475e372e-f5c9-4897-a0c0-b090e5d7f61b |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:39:21Z |
| publishDate | 2014 |
| publisher | European Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:475e372e-f5c9-4897-a0c0-b090e5d7f61b2022-03-26T15:19:44ZMagnetic ordering in Cr-doped Bi₂Se₃ thin filmsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:475e372e-f5c9-4897-a0c0-b090e5d7f61bEnglishSymplectic Elements at OxfordEuropean Physical Society2014Collins-Mcintyre, LJHarrison, SESchoenherr, PSteinke, N-JKinane, CJCharlton, TRAlba-Veneroa, DPhusp, AKellock, AJParkin, SSPHarris, JSLangridge, Svan der Laan, GHesjedal, TWe report the structural and magnetic study of Cr-doped Bi2Se3 thin films using x-ray diffraction (XRD), magnetometry and polarized neutron reflectometry (PNR). Epitaxial layers were grown on c-plane sapphire by molecular beam epitaxy in a two-step process. Highresolution XRD shows the exceptionally high crystalline quality of the doped films with no parasitic phases up to a Cr concentration of 12% (in % of the Bi sites occupied by substitutional Cr). The magnetic moment, measured by SQUID magnetometry, was found to be ∼2.1 μB per Cr ion. The magnetic hysteresis curve shows an open loop with a coercive field of ∼10 mT. The ferromagnetic transition temperature was determined to be 8.5 K analyzing the magnetizationtemperature gradient. PNR shows the film to be homogeneously ferromagnetic with no enhanced magnetism near the surface or interface. |
| spellingShingle | Collins-Mcintyre, LJ Harrison, SE Schoenherr, P Steinke, N-J Kinane, CJ Charlton, TR Alba-Veneroa, D Phusp, A Kellock, AJ Parkin, SSP Harris, JS Langridge, S van der Laan, G Hesjedal, T Magnetic ordering in Cr-doped Bi₂Se₃ thin films |
| title | Magnetic ordering in Cr-doped Bi₂Se₃ thin films |
| title_full | Magnetic ordering in Cr-doped Bi₂Se₃ thin films |
| title_fullStr | Magnetic ordering in Cr-doped Bi₂Se₃ thin films |
| title_full_unstemmed | Magnetic ordering in Cr-doped Bi₂Se₃ thin films |
| title_short | Magnetic ordering in Cr-doped Bi₂Se₃ thin films |
| title_sort | magnetic ordering in cr doped bi₂se₃ thin films |
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