Novel behaviors of anomalous Hall effect in TbFeCo ferrimagnetic thin films
We investigate the temperature dependence and the thickness dependence of anomalous Hall effect (AHE) of TbFeCo ultra-thin films under high magnetic field. The sign change on temperature dependence of AHE in 20nm-thick TbFeCo film with rare-earth (RE) rich composition was observed. The AHE sign at l...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2018-05-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5007775 |
| _version_ | 1811330527251136512 |
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| author | Ryo Ando Takashi Komine Shiori Sato Shingo Kaneta Yoshiaki Hara |
| author_facet | Ryo Ando Takashi Komine Shiori Sato Shingo Kaneta Yoshiaki Hara |
| author_sort | Ryo Ando |
| collection | DOAJ |
| description | We investigate the temperature dependence and the thickness dependence of anomalous Hall effect (AHE) of TbFeCo ultra-thin films under high magnetic field. The sign change on temperature dependence of AHE in 20nm-thick TbFeCo film with rare-earth (RE) rich composition was observed. The AHE sign at low temperature is negative while it gradually becomes positive as the temperature increases. Moreover, the AHE sign for 5nm-thick TbFeCo film remains positive while that for 50nm-thick TbFeCo film remains negative at temperature in the range from 5 K to 400 K. The similar thickness dependence of AHE in TM-rich samples was also observed. From the mean-field approximation, the sign change temperature in AHE is related to the compensation temperature and the existence of interfacial region, which has the TM-rich composition and the weak anisotropy. Therefore, We clarified that the novel behavior of AHE sign changes in TbFeCo thin films with different thickness can be explained by the interfacial layer with weak anisotropy and two phase model. |
| first_indexed | 2024-04-13T16:04:31Z |
| format | Article |
| id | doaj.art-63551c043df4414d86e313f7015b731b |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-04-13T16:04:31Z |
| publishDate | 2018-05-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-63551c043df4414d86e313f7015b731b2022-12-22T02:40:26ZengAIP Publishing LLCAIP Advances2158-32262018-05-0185056316056316-710.1063/1.5007775197892ADVNovel behaviors of anomalous Hall effect in TbFeCo ferrimagnetic thin filmsRyo Ando0Takashi Komine1Shiori Sato2Shingo Kaneta3Yoshiaki Hara4Faculty of Engineering, Ibaraki University, 4-12-1, Nakanarusawa, Hitachi, Ibaraki 316-8511, JapanFaculty of Engineering, Ibaraki University, 4-12-1, Nakanarusawa, Hitachi, Ibaraki 316-8511, JapanNational Institute of Technology, Ibaraki College, 866 Nakane, Hitachinaka, Ibaraki 312-8508, JapanNational Institute of Technology, Ibaraki College, 866 Nakane, Hitachinaka, Ibaraki 312-8508, JapanNational Institute of Technology, Ibaraki College, 866 Nakane, Hitachinaka, Ibaraki 312-8508, JapanWe investigate the temperature dependence and the thickness dependence of anomalous Hall effect (AHE) of TbFeCo ultra-thin films under high magnetic field. The sign change on temperature dependence of AHE in 20nm-thick TbFeCo film with rare-earth (RE) rich composition was observed. The AHE sign at low temperature is negative while it gradually becomes positive as the temperature increases. Moreover, the AHE sign for 5nm-thick TbFeCo film remains positive while that for 50nm-thick TbFeCo film remains negative at temperature in the range from 5 K to 400 K. The similar thickness dependence of AHE in TM-rich samples was also observed. From the mean-field approximation, the sign change temperature in AHE is related to the compensation temperature and the existence of interfacial region, which has the TM-rich composition and the weak anisotropy. Therefore, We clarified that the novel behavior of AHE sign changes in TbFeCo thin films with different thickness can be explained by the interfacial layer with weak anisotropy and two phase model.http://dx.doi.org/10.1063/1.5007775 |
| spellingShingle | Ryo Ando Takashi Komine Shiori Sato Shingo Kaneta Yoshiaki Hara Novel behaviors of anomalous Hall effect in TbFeCo ferrimagnetic thin films AIP Advances |
| title | Novel behaviors of anomalous Hall effect in TbFeCo ferrimagnetic thin films |
| title_full | Novel behaviors of anomalous Hall effect in TbFeCo ferrimagnetic thin films |
| title_fullStr | Novel behaviors of anomalous Hall effect in TbFeCo ferrimagnetic thin films |
| title_full_unstemmed | Novel behaviors of anomalous Hall effect in TbFeCo ferrimagnetic thin films |
| title_short | Novel behaviors of anomalous Hall effect in TbFeCo ferrimagnetic thin films |
| title_sort | novel behaviors of anomalous hall effect in tbfeco ferrimagnetic thin films |
| url | http://dx.doi.org/10.1063/1.5007775 |
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