--- _id: '678' abstract: - lang: eng text: Asymmetric magnetic hysteresis loops are usually found in exchange bias (EB) systems, typically after field cooling a system below the NĂ©el temperature of an antiferromagnet exchange coupled to a ferromagnet. Alternatively, asymmetric hysteresis loops may occur due to undetected minor loops or in systems with a rotational anisotropy. Here, we report on an exchange bias thin film system MgO(100)/Co/CoO, examined at room temperature, which is far above the blocking temperature, by the magneto-optical Kerr effect (MOKE). While the longitudinal hysteresis loops partly show steps which are well-known from diverse purely ferromagnetic systems, the transverse hysteresis loops exhibit clear asymmetries, similar to exchange biased systems at low temperatures, and unusual transverse magnetization values at saturation. Since minor loops and a rotational anisotropy can be excluded in this case, this asymmetry can possibly be a residue of the exchange bias coupling at lower temperatures. article_number: '71' article_type: original author: - first_name: Andrea full_name: Ehrmann, Andrea last_name: Ehrmann - first_name: Tomasz full_name: Blachowicz, Tomasz last_name: Blachowicz date_created: 2021-01-03T17:47:40Z date_updated: 2021-01-18T15:32:28Z ddc: - '620' department: - _id: '103' doi: 10.3390/condmat5040071 file: - access_level: open_access content_type: application/pdf creator: aehrmann date_created: 2021-01-03T17:47:11Z date_updated: 2021-01-03T17:47:11Z file_id: '679' file_name: _2020_Ehrmann_CondensMatter05_71v2.pdf file_size: 1118449 relation: main_file success: 1 file_date_updated: 2021-01-03T17:47:11Z has_accepted_license: '1' intvolume: ' 5' issue: '4' keyword: - exchange bias - rotatable anisotropy - blocking temperature - minor loops - Co/CoO language: - iso: eng oa: '1' publication: Condensed Matter publication_identifier: issn: - 2410-3896 publication_status: published quality_controlled: '1' status: public title: Asymmetric Hysteresis Loops in Co Thin Films type: journal_article user_id: '223776' volume: 5 year: '2020' ...