Hydration of gadolinium oxide ( Gd O x ) and its effect on voltage-induced Co oxidation in a Pt / Co / Gd O x / Au heterostructure
© 2019 American Physical Society. Magneto-ionic control of magnetism has garnered great interest in recent years due to the large magnetic changes that can be induced using a relatively small voltage. One model structure for this is Pt/Co/GdOx/Au, where Co is the magnetic layer and GdOx is the ionic...
| প্রধান লেখক: | , , , , , , , , |
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| অন্যান্য লেখক: | |
| বিন্যাস: | প্রবন্ধ |
| ভাষা: | English |
| প্রকাশিত: |
American Physical Society (APS)
2021
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| অনলাইন ব্যবহার করুন: | https://hdl.handle.net/1721.1/134614 |
| _version_ | 1826211824184328192 |
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| author | Tan, Aik Jun Huang, Mantao Sheffels, Sara Büttner, Felix Kim, Sunho Hunt, Adrian H Waluyo, Iradwikanari Tuller, Harry L Beach, Geoffrey SD |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Tan, Aik Jun Huang, Mantao Sheffels, Sara Büttner, Felix Kim, Sunho Hunt, Adrian H Waluyo, Iradwikanari Tuller, Harry L Beach, Geoffrey SD |
| author_sort | Tan, Aik Jun |
| collection | MIT |
| description | © 2019 American Physical Society. Magneto-ionic control of magnetism has garnered great interest in recent years due to the large magnetic changes that can be induced using a relatively small voltage. One model structure for this is Pt/Co/GdOx/Au, where Co is the magnetic layer and GdOx is the ionic conductor, with the magnetic properties dependent on the oxidation state of Co. While this structure is commonly used, there is limited understanding of the effect of GdOx properties on voltage-induced magnetic changes. In this work, we show that hydration of Gd2O3 to form Gd(OH)3 is crucial for voltage-induced Co oxidation in a Pt/Co/GdOx/Au device. By examining the rate of Co oxidation in nonhydrated and hydrated devices, we conclude that H2O in the GdOx layer acts as an oxidant during the voltage-induced Co oxidation process. Co oxidation through this interfacial reaction process is confirmed by in situ x-ray absorption spectroscopy. |
| first_indexed | 2024-09-23T15:11:57Z |
| format | Article |
| id | mit-1721.1/134614 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T15:11:57Z |
| publishDate | 2021 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1346142023-03-02T16:04:03Z Hydration of gadolinium oxide ( Gd O x ) and its effect on voltage-induced Co oxidation in a Pt / Co / Gd O x / Au heterostructure Tan, Aik Jun Huang, Mantao Sheffels, Sara Büttner, Felix Kim, Sunho Hunt, Adrian H Waluyo, Iradwikanari Tuller, Harry L Beach, Geoffrey SD Massachusetts Institute of Technology. Department of Materials Science and Engineering © 2019 American Physical Society. Magneto-ionic control of magnetism has garnered great interest in recent years due to the large magnetic changes that can be induced using a relatively small voltage. One model structure for this is Pt/Co/GdOx/Au, where Co is the magnetic layer and GdOx is the ionic conductor, with the magnetic properties dependent on the oxidation state of Co. While this structure is commonly used, there is limited understanding of the effect of GdOx properties on voltage-induced magnetic changes. In this work, we show that hydration of Gd2O3 to form Gd(OH)3 is crucial for voltage-induced Co oxidation in a Pt/Co/GdOx/Au device. By examining the rate of Co oxidation in nonhydrated and hydrated devices, we conclude that H2O in the GdOx layer acts as an oxidant during the voltage-induced Co oxidation process. Co oxidation through this interfacial reaction process is confirmed by in situ x-ray absorption spectroscopy. 2021-10-27T20:05:46Z 2021-10-27T20:05:46Z 2019 2019-09-17T15:38:26Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134614 en 10.1103/PhysRevMaterials.3.064408 Physical Review Materials Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society (APS) APS |
| spellingShingle | Tan, Aik Jun Huang, Mantao Sheffels, Sara Büttner, Felix Kim, Sunho Hunt, Adrian H Waluyo, Iradwikanari Tuller, Harry L Beach, Geoffrey SD Hydration of gadolinium oxide ( Gd O x ) and its effect on voltage-induced Co oxidation in a Pt / Co / Gd O x / Au heterostructure |
| title | Hydration of gadolinium oxide ( Gd O x ) and its effect on voltage-induced Co oxidation in a Pt / Co / Gd O x / Au heterostructure |
| title_full | Hydration of gadolinium oxide ( Gd O x ) and its effect on voltage-induced Co oxidation in a Pt / Co / Gd O x / Au heterostructure |
| title_fullStr | Hydration of gadolinium oxide ( Gd O x ) and its effect on voltage-induced Co oxidation in a Pt / Co / Gd O x / Au heterostructure |
| title_full_unstemmed | Hydration of gadolinium oxide ( Gd O x ) and its effect on voltage-induced Co oxidation in a Pt / Co / Gd O x / Au heterostructure |
| title_short | Hydration of gadolinium oxide ( Gd O x ) and its effect on voltage-induced Co oxidation in a Pt / Co / Gd O x / Au heterostructure |
| title_sort | hydration of gadolinium oxide gd o x and its effect on voltage induced co oxidation in a pt co gd o x au heterostructure |
| url | https://hdl.handle.net/1721.1/134614 |
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