Origin of ion bombardment induced Tb oxidation in Tb/Co multilayers
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arXiv
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866910775916888064 |
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| author | Kiphart, Daniel Krupinski, Michal Mitura-Nowak, Marzena Michalowski, Pawel Piotr Kowacz, Mateusz Schmidt, Marek Stobiecki, Feliks Chaves-O'Flynn, Gabriel David Kuswik, Piotr |
| author_facet | Kiphart, Daniel Krupinski, Michal Mitura-Nowak, Marzena Michalowski, Pawel Piotr Kowacz, Mateusz Schmidt, Marek Stobiecki, Feliks Chaves-O'Flynn, Gabriel David Kuswik, Piotr |
| contents | Ion bombardment is currently an active area of research for patterning rare earth/transition metal ferrimagnetic thin films because the magnetic properties are extremely sensitive to changes in the constituent sublattices. It has previously been shown that ion bombardment can be used to deliberately reduce the contribution of the rare earth sublattice in rare earth/transition metal ferrimagnets by selective oxidation. However, the exact mechanism by which oxidation occurs remains an outstanding question. We show that the defects introduced by ion bombardment of Tb/Co multilayers using different ion species with projected range (i.e., 10 keV He + , 15 keV O + , and 30 keV Ga +) create easy diffusion paths for oxygen to penetrate the system. The choice of ion species and fluence enables the effective composition of the films to be tailored by reducing the amount of magnetically-active Tb. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_03899 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Origin of ion bombardment induced Tb oxidation in Tb/Co multilayers Kiphart, Daniel Krupinski, Michal Mitura-Nowak, Marzena Michalowski, Pawel Piotr Kowacz, Mateusz Schmidt, Marek Stobiecki, Feliks Chaves-O'Flynn, Gabriel David Kuswik, Piotr Materials Science Ion bombardment is currently an active area of research for patterning rare earth/transition metal ferrimagnetic thin films because the magnetic properties are extremely sensitive to changes in the constituent sublattices. It has previously been shown that ion bombardment can be used to deliberately reduce the contribution of the rare earth sublattice in rare earth/transition metal ferrimagnets by selective oxidation. However, the exact mechanism by which oxidation occurs remains an outstanding question. We show that the defects introduced by ion bombardment of Tb/Co multilayers using different ion species with projected range (i.e., 10 keV He + , 15 keV O + , and 30 keV Ga +) create easy diffusion paths for oxygen to penetrate the system. The choice of ion species and fluence enables the effective composition of the films to be tailored by reducing the amount of magnetically-active Tb. |
| title | Origin of ion bombardment induced Tb oxidation in Tb/Co multilayers |
| topic | Materials Science |
| url | https://arxiv.org/abs/2501.03899 |