Exploring the full magneto-ionic oxidation spectrum in Pt/CoFeB/HfO2
Authors/Creators
- Benguettat-El Mokhtari, I (Data curator)1
-
Pachat, Rohit
(Data curator)1
-
Porée, Victor
(Data curator)2
-
Lamperti, Alessio
(Researcher)3
- Roussigné, Yves (Data curator)4
-
Syskaki, Maria-Andromachi
(Researcher)5
- Wrona, J. (Data curator)5
- Bernard, Guillaume (Researcher)1
- Cataldo, Alessandro (Researcher)3
- Resta, A. (Researcher)2
- et al. Show all 18 authors
- Benguettat-El Mokhtari, I (Data curator)1
-
Pachat, Rohit
(Data curator)1
-
Porée, Victor
(Data curator)2
-
Lamperti, Alessio
(Researcher)3
- Roussigné, Yves (Data curator)4
-
Syskaki, Maria-Andromachi
(Researcher)5
- Wrona, J. (Data curator)5
- Bernard, Guillaume (Researcher)1
- Cataldo, Alessandro (Researcher)3
- Resta, A. (Researcher)2
-
Nicolaou, Alessandro
(Researcher)2
- Ono, S. (Researcher)6
- Cherif, Salim Mourad (Researcher)4
-
Langer, Juergen
(Researcher)5
-
Ravelosona, Dafiné
(Researcher)1
-
Belmeguenai, Mohamed
(Data curator)4
- Solignac, A. (Supervisor)7
- Herrera-Diez, Liza (Contact person)1
- 1. Centre de Nanosciences et de Nanotechnologies, CNRS, Université Paris-Saclay, 91120 Palaiseau, France
- 2. Synchrotron SOLEIL, L'Orme des Merisiers, 91190 Saint-Aubin, France
- 3. CNR-IMM, Agrate Unit Via C. Olivetti, 2-20864 Agrate Brianza (MB), Italy
- 4. Laboratoire des Sciences des Procédés et des Matériaux, CNRS-UPR 3407, Université Sorbonne Paris Nord, 93430 Villetaneuse, France
- 5. Singulus Technologies AG, Hanauer Landstrasse 103, 63796 Kahl am Main, Germany
- 6. Central Research Institute of Electric Power Industry, Yokosuka, Kanagawa 240-0196, Japan
- 7. SPEC, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette Cedex, France
Description
We show that in Pt/CoFeB/HfO2 a wide range of oxidation levels at the ferromagnet/oxide interface can be accessed through magneto-ionic gating using ionic liquid gates. Perpendicular magnetic anisotropy (PMA) is induced at intermediate oxidation levels, while two in-plane anisotropy states with nonequivalent ionic states are induced for under-oxidized and over-oxidized interfaces. This system shows reversibility and non-volatility in the whole range of oxidation states, where oxidation levels have been monitored by x-ray absorption spectroscopy and x-ray photoelectron spectroscopy. This study shows that multistate magneto-ionic memory elements with a wider range of intermediate states can be designed by leveraging both under- and over-oxidation around the optimal oxidation state that induces PMA.
Files
APL25-AR-02092.pdf
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Additional details
Funding
- European Commission
- Metaspin 101098651