Perpendicular anisotropy in an epilayer of magnesium ferrite

1979 ◽  
Vol 50 (B11) ◽  
pp. 7838
Author(s):  
J. Baszyński ◽  
B. Szymański
Keyword(s):  
Magnesium Ferrite ◽  
Perpendicular Anisotropy

Low-voltage EDS of magnesium ferrite Dendrites in a FEG-SEM

1996 ◽  
Vol 54 ◽  
pp. 478-479
Author(s):  
Matthew T. Johnson ◽  
Ian M. Anderson ◽  
Jim Bentley ◽  
C. Barry Carter
Keyword(s):  
Monte Carlo ◽  
Quantitative Analysis ◽  
Monte Carlo Simulations ◽  
Cross Section ◽  
Spatial Resolution ◽  
Low Voltage ◽  
Magnesium Ferrite ◽  
X Ray ◽  
Interaction Volume ◽  
Ferrite Spinel

Energy-dispersive X-ray spectrometry (EDS) performed at low (≤ 5 kV) accelerating voltages in the SEM has the potential for providing quantitative microanalytical information with a spatial resolution of ∼100 nm. In the present work, EDS analyses were performed on magnesium ferrite spinel [(MgxFe1−x)Fe2O4] dendrites embedded in a MgO matrix, as shown in Fig. 1. spatial resolution of X-ray microanalysis at conventional accelerating voltages is insufficient for the quantitative analysis of these dendrites, which have widths of the order of a few hundred nanometers, without deconvolution of contributions from the MgO matrix. However, Monte Carlo simulations indicate that the interaction volume for MgFe2O4 is ∼150 nm at 3 kV accelerating voltage and therefore sufficient to analyze the dendrites without matrix contributions.Single-crystal {001}-oriented MgO was reacted with hematite (Fe2O3) powder for 6 h at 1450°C in air and furnace cooled. The specimen was then cleaved to expose a clean cross-section suitable for microanalysis.

scholarly journals High-yield fabrication of perpendicularly magnetised synthetic antiferromagnetic nanodiscs

Nano Research ◽  
2021 ◽  
Author(s):  
Emma N. Welbourne ◽  
Tarun Vemulkar ◽  
Russell P. Cowburn
Keyword(s):  
Thin Film ◽  
Magnetic Properties ◽  
Sacrificial Layer ◽  
Nanosphere Lithography ◽  
High Yield ◽  
Perpendicular Anisotropy ◽  
Ion Milling ◽  
Lift Off

AbstractSynthetic antiferromagnetic (SAF) particles with perpendicular anisotropy display a number of desirable characteristics for applications in biological and other fluid environments. We present an efficient and effective method for the patterning of ultrathin Ruderman-Kittel-Kasuya-Yoshida coupled, perpendicularly magnetised SAFs using a combination of nanosphere lithography and ion milling. A Ge sacrificial layer is utilised, which provides a clean and simple lift-off process, as well as maintaining the key magnetic properties that are beneficial to target applications. We demonstrate that the method is capable of producing a particularly high yield of well-defined, thin film based nanoparticles.

Effect of Mg2+ ions on competitive metal ions adsorption/desorption on magnesium ferrite: Mechanism, reusability and stability studies

2021 ◽  
Vol 411 ◽  
pp. 124902
Author(s):  
Andrei Ivanets ◽  
Vladimir Prozorovich ◽  
Tatyana Kouznetsova ◽  
Tetiana Dontsova ◽  
Olena Yanushevska ◽  
...  
Keyword(s):  
Metal Ions ◽  
Magnesium Ferrite ◽  
Stability Studies ◽  
Adsorption Desorption

Properties of perpendicular-anisotropy magnetic tunnel junctions fabricated over the bottom electrode contact

2015 ◽  
Vol 54 (4S) ◽  
pp. 04DM06 ◽  
Author(s):  
Sadahiko Miura ◽  
Hiroaki Honjo ◽  
Keizo Kinoshita ◽  
Keiichi Tokutome ◽  
Hiroaki Koike ◽  
...  
Keyword(s):  
Bottom Electrode ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Perpendicular Anisotropy ◽  
Electrode Contact

Effect of Orientation and Microstructure on the Magnetic Anisotropy of Co/Pd Multilayers

1989 ◽  
Vol 151 ◽  
Author(s):  
Frits J. A. den Broeder ◽  
Dick Kuiper ◽  
Willem Hoving
Keyword(s):  
Magnetic Anisotropy ◽  
Deposition Temperature ◽  
Structural Deformation ◽  
Perpendicular Anisotropy ◽  
Modulation Period ◽  
Perpendicular Magnetization ◽  
Plane Anisotropy ◽  
Interface Anisotropy

ABSTRACTCo/Pd multilayers containing one to eight atomic layers of cobalt and ten atomic layers of palladium per modulation period were prepared in two orienotarteiottnoss, [111]fcc and [001]fcc. The [111] films were polycrystalline, the [001] films were epitaxial.In this paper we compare the magnetic anisotropy of both types of films, which can be described by an interface anisotropy contribution favouring perpendicular magnetization and a volume contribution favouring in-plane magnetization. Depending on the deposition temperature, a perpendicular anisotropy for [111] films is found for up to about six atomic layers of Co. The [001] films however, show perpendicular anisotropy only for Co monolayers or Co bilayers. The large difference between the anisotropies in the two orientations is mainly caused by a strong in-plane anisotropy volume term which exists for [001] films, and which is attributed to the structural deformation of the Co layers from cubic to tetragonal. For both orientations a higher deposition temperature is found to lead to an increase of the interface anisotropy due to smoothing of the layers.

A perpendicular-anisotropy CoFeB–MgO magnetic tunnel junction

2010 ◽  
Vol 9 (9) ◽  
pp. 721-724 ◽  
Author(s):  
S. Ikeda ◽  
K. Miura ◽  
H. Yamamoto ◽  
K. Mizunuma ◽  
H. D. Gan ◽  
...  
Keyword(s):  
Tunnel Junction ◽  
Magnetic Tunnel Junction ◽  
Perpendicular Anisotropy

scholarly journals Magnetic ground and remanent states of synthetic metamagnets with perpendicular anisotropy

2011 ◽  
Vol 303 ◽  
pp. 012051 ◽  
Author(s):  
N S Kiselev ◽  
U K Rößler ◽  
A N Bogdanov ◽  
O Hellwig
Keyword(s):  
Perpendicular Anisotropy
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