Chemical effects at interfaces of Fe/MgO/Fe magnetic tunnel junction

Singh, Jitendra Pal; Kaur, Baljeet; Gautam, Sanjeev; Lim, Weon Cheol; Asokan, K.; Chae, Keun Hwa

doi:10.1016/j.spmi.2016.10.015

Cited by 15 publications

(7 citation statements)

References 174 publications

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“…Given that no possible lattice plane matching exists for Mg/Fe coupling according to the edge-to-edge matching model for the hexagonal closest packing/body centered cubic system 22 . However, a large extent of lattice matching (with only a small lattice mismatch of 3.8%) on a 45° in-plane rotation can be found between MgO and Fe, arising from strain misfit by dislocations 23 , 24 . FaST induced Severe plastic deformation could introduce lattice mismatch between Fe and MgO to some extent.…”

Section: Resultsmentioning

confidence: 99%

Interfacial reaction during friction stir assisted scribe welding of immiscible Fe and Mg alloy system

Das

Upadhyay

Wang

et al. 2021

Sci Rep

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We report on interfacial characteristics and chemistry of bonded Mg-Fe interfaces welded using friction stir assisted scribe technique (FaST). Two pairs of dissimilar joints: (AZ31-DP590) and (Pure Mg-DP590) were studied to shed light on joining mechanisms responsible for bonding of “immiscible” pairs of Mg and Fe. We present first direct experimental evidence of presence of oxide layer, Al segregation by atom probe tomography and nano steel grains close to interface by transmission electron microscopy study.

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Section: Resultsmentioning

confidence: 99%

Interfacial reaction during friction stir assisted scribe welding of immiscible Fe and Mg alloy system

Das

Upadhyay

Wang

et al. 2021

Sci Rep

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“…The dielectric constant of this material is 10 [35]. Thus, highly-insulating nature of this material, provides an opportunity to be utilized in fabrication of magnetic tunnel junctions, an important spintronic device [36].…”

Section: General Propertiesmentioning

confidence: 99%

d° Ferromagnetism of Magnesium Oxide

Singh

Chae

2017

Condensed Matter

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Magnetism without d-orbital electrons seems to be unrealistic; however, recent observations of magnetism in non-magnetic oxides, such as ZnO, HfO 2 , and MgO, have opened new avenues in the field of magnetism. Magnetism exhibited by these oxides is known as d • ferromagnetism, as these oxides either have completely filled or unfilled d-/f-orbitals. This magnetism is believed to occur due to polarization induced by p-orbitals. Magnetic polarization in these oxides arises due to vacancies, the excitation of trapped spin in the triplet state. The presence of vacancies at the surface and subsurface also affects the magnetic behavior of these oxides. In the present review, origins of magnetism in magnesium oxide are discussed to obtain understanding of d • ferromagnetism.

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“…Magnetic property of this material make enable its use in low-field magnetic sensor [ 70 ]. Nevertheless, utilization of MgO as a barrier layer in magnetic tunnel junction has increased its importance in the field of spintronics [ 112 , 113 ].…”

Section: Introductionmentioning

confidence: 99%

Approaches to synthesize MgO nanostructures for diverse applications

Singh

Sharma

et al. 2020

Heliyon

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Magnesium oxide remained interesting from long time for several important phenomena like; defect induced magnetism, spin electron reflectivity, broad laser emission etc. Moreover, nanostructures of this material exhibited suitability for different kinds of applications ranging from wastewater treatment to spintronics depending upon their shape and size. In this way, researchers had grown nanostructures in the form of nanoparticles, thin films, nanotubes, nanowalls, nanobelts. Though nanoparticles and thin films are well known form of nanostructures and wide variety of synthesis approaches are available, however, limited methodology for other nanostructures are available. In order to grow these nanostructures in an optimized way an understanding of these methods is essential. Thus, this review article depicts an overview of various approaches for design of different kinds of nanostructures.

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Chemical effects at interfaces of Fe/MgO/Fe magnetic tunnel junction

Cited by 15 publications

References 174 publications

Interfacial reaction during friction stir assisted scribe welding of immiscible Fe and Mg alloy system

Interfacial reaction during friction stir assisted scribe welding of immiscible Fe and Mg alloy system

d° Ferromagnetism of Magnesium Oxide

Approaches to synthesize MgO nanostructures for diverse applications

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