Preparation characterization of MnSb–GaAs spin LED

Hanna, Taku; Yoshida, Daisuke; Munekata, H.

doi:10.1016/j.jcrysgro.2010.11.146

Cited by 11 publications

(4 citation statements)

References 22 publications

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“…Magnetizations of thin magnetic layers perpendicular to the substrate are a crucial prerequisite for the fabrication of several forward-looking spintronic device applications. Such applications are, for instance, ready-to-use circular light-emitting diodes (spin-LEDs) operating in the absence of any external magnetic field that enable optical spin information transfer over macroscopic distances without heat development associated with moving charges. − Moreover, also three-dimensional recording concepts with unsurpassed data storage capacities, like, for example, the magnetic domain wall racetrack memory, which is considered as an alternative to the conventionally used two-dimensional magnetic recording technology that nowadays attains its maximum storage density, rely on magnetizations and device architectures perpendicular to the substrate. , …”

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confidence: 99%

GaAs–Fe₃Si Core–Shell Nanowires: Nanobar Magnets

et al. 2013

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Semiconductor-ferromagnet GaAs-Fe3Si core-shell nanowires were grown by molecular beam epitaxy and analyzed by scanning and transmission electron microscopy, X-ray diffraction, Mössbauer spectroscopy, and magnetic force microscopy. We obtained closed and smooth Fe3Si shells with a crystalline structure that show ferromagnetic properties with magnetizations along the nanowire axis (perpendicular to the substrate). Such nanobar magnets are promising candidates to enable the fabrication of new forward-looking devices in the field of spintronics and magnetic recording.

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confidence: 99%

GaAs–Fe₃Si Core–Shell Nanowires: Nanobar Magnets

et al. 2013

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“…Рассматриваются различные области применения антимонида марганца как в качестве объемных кристаллов, так и в виде тонких пленок [13,14]. Считается, что антимонид марганца в виде объемных кристаллов перспективен как материал для создания высокотемпературных микрохолодильников на основе магнетокалорического эффекта [15,16]. Пленки MnSb полученные на полупроводниковых подложках группы A III B V рассматриваются как перспективные материалы устройств спинтроники.…”

Section: Introductionunclassified

Synthesis of bulk crystals and thin films of the ferromagnetic MnSb

Jaloliddinzoda

Маренкин

Ril

et al. 2021

kcmf

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High-temperature ferromagnets are widely used on a practical level. Based on them, magnetic memory for computers and various types of magnetic field sensors are created. Therefore, bulk ingots and thin-film samples of ferromagnet manganese antimonide (MnSb) with a high Curie point are of great interest, both from the practical and fundamental sides. Manganese antimonide films are obtained in hybrid structures using molecular-beam epitaxy. The thickness of the films does not exceed tens of nanometers. Despite their high sensitivity to magnetic fields, their small thickness prevents them from being used as magnetic field sensors. The aim of this work was to synthesise thick bulk ingots of manganese antimonide crystalsand films with a thickness of ~ 400 nm on sitall and silicon substrates. MnSb crystals were synthesised using the vacuum-ampoule method and identified using XRD, DTA, and microstructural analysis. The results of studies of bulk samples indicated the presence of an insignificant amount of antimony in additionto the MnSb phase. According to the DTA thermogram of the MnSb alloy, a small endothermic effect was observed at 572 °C, which corresponds to the melting of the eutectic on the part of antimony in the Mn-Sb system. Such composition, according to previous studies, guaranteed the production of manganese antimonide with the maximum Curie temperature. A study of the magnetic properties showed that the synthesised MnSb crystals were a soft ferromagnet with the Curie point ~ 587 K. Thin MnSb films were obtained by an original method using separate sequential deposition in a high vacuum of the Mnand Sb metals with their subsequent annealing. To optimise the process of obtaining films with stoichiometric composition, the dependences of the thickness of metal films on the parameters of the deposition process were calculated. The temperature range of annealing at which the metals interact with the formation of ferromagnetic MnSb films was established, the films were identified, and their electrical and magnetic properties were measured

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“…There exist several demonstrated “hybrid material” device applications featuring the combination of MnSb and MnAs with semiconducting layers. To fully realize the potential of such hybrid spintronic materials requires improvements in the spin polarization at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Depth sensitive X‐ray diffraction as a probe of buried half‐metallic inclusions

Burrows

Hase

Ashwin

et al. 2016

Physica Status Solidi (b)

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The ferromagnetic material MnSb can exist in two polymorphs in epitaxial thin‐film form, namely niccolite n‐MnSb and cubic c‐MnSb. We investigate the behavior of these polymorphs using grazing incidence depth‐dependent in‐plane X‐ray diffraction. The in‐plane lattice parameter evolution of a nominal 3000 Å thin film reveals a small near‐surface compression of ∼0.1% in the majority n‐MnSb component. A similar effect is also observed for the cubic polymorph, suggesting that the local strain environment of these crystallites is dominated by the n‐MnSb matrix. Collated in‐plane X‐ray diffraction data from a GaAs/ normalIn0.5normalGa0.5As(111)/MnSb heterostructure in the near‐surface region with probing depths ranging between 20 and 450 Å. Present are two of the polymorphs of MnSb: the niccolite (n‐) and cubic zincblende (c‐) phases.

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Preparation characterization of MnSb–GaAs spin LED

Cited by 11 publications

References 22 publications

GaAs–Fe₃Si Core–Shell Nanowires: Nanobar Magnets

GaAs–Fe₃Si Core–Shell Nanowires: Nanobar Magnets

Synthesis of bulk crystals and thin films of the ferromagnetic MnSb

Depth sensitive X‐ray diffraction as a probe of buried half‐metallic inclusions

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Preparation characterization of MnSb–GaAs spin LED

Cited by 11 publications

References 22 publications

GaAs–Fe3Si Core–Shell Nanowires: Nanobar Magnets

GaAs–Fe3Si Core–Shell Nanowires: Nanobar Magnets

Synthesis of bulk crystals and thin films of the ferromagnetic MnSb

Depth sensitive X‐ray diffraction as a probe of buried half‐metallic inclusions

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Resources

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GaAs–Fe₃Si Core–Shell Nanowires: Nanobar Magnets

GaAs–Fe₃Si Core–Shell Nanowires: Nanobar Magnets