Progress in Fe3O4-centered spintronic systems: Development, architecture, and features

Ansari, M. Shahnawaze; Othman, Mohd Hafiz Dzarfan; Ansari, Mohammad Omaish; Ansari, Sana; Abdullah, Huda

doi:10.1016/j.apmt.2021.101181

Cited by 11 publications

(3 citation statements)

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“…Among these compounds, magnetite (Fe 3 O 4 ) is one of the more attractive materials due to its halfmetallic properties, high spin polarization at room temperature [17][18][19], natural abundance, low cost and being nontoxic for the environment. In the last years important advances have been made in the fabrication of Fe 3 O 4 based nanostructures for studying the tunnel magnetoresistance (TMR) [20], magnetoelectric coupling [21] and the design of spintronic devices [22,23]. Noncrystalline iron oxide thin films and hybrid/composites were fabricated from different methods as chemical vapor deposition, pulsed laser deposition or sputtering.…”

Section: Introductionmentioning

confidence: 99%

Annealing effects on the magnetic and magnetotransport properties of iron oxide nanoparticles self-assemblies

et al. 2023

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We report a systematic study of the effects of vacuum annealing in the structural, magnetic and transport properties of self-assembled ∽10 nm Fe3O4 nanoparticles. The high temperature treatment decomposes the organic coating into amorphous carbon, reducing the electrical resistivity of the assemblies by 4 orders of magnitude. At the same time, the annealing reduces the Fe2+/Fe3+ ratio, indicating an important surface oxidation, and increases the number of defects and hot-spots in the gap between the nanoparticles. This is reflected in the reduction of the spin dependent tunneling, which reduces the interparticle magnetoresistance. This work shows the importance of optimizing the nanostructure fabrication for increasing the tunnelling current without degrading the spin polarized current.

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Section: Introductionmentioning

confidence: 99%

Annealing effects on the magnetic and magnetotransport properties of iron oxide nanoparticles self-assemblies

et al. 2023

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“…Among the numerous visualization methods, magnetic resonance imaging (MRI) is an effective method for diagnosing lesions and guiding the extent of surgical resection. − In order to improve the contrast imaging effect, the development of efficient contrast agents has been the focus of therapeutics. According to the imaging mechanism, MRI contrast agents can be divided into T 1 -type and T 2 -type contrast agents. Due to the characteristics of T 1 -type contrast agents that will brighten the lesion area and are more suitable for disease diagnosis, the T 1 -type gadolinium complexes (Gd-DTPA, Gd-DOTA, etc.)…”

Section: Introductionmentioning

confidence: 99%

Series of High Magnetic Resonance-Guided Photoinduced Nanodelivery Systems for Precisely Improving the Efficiency of Cancer Therapy

Liu

Yao

Zhou

et al. 2022

ACS Appl. Mater. Interfaces

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Nanochemotherapy is recognized as one of the most promising cancer treatment options, and the design of the carrier has a crucial impact on the final efficacy. To precisely improve the efficacy and reduce the toxicity, we combined the clinical contrast agent (Gd-DTPA) with a stimulus-sensitive o-nitrobenzyl ester and then prepared a series of nNBGD lipids by varying the carbon chain length of the hydrophobic group. The self-assembled nNBGD liposomes can be tracked by MRI to localize the aggregation of drug carriers in vivo, so as to prompt the application of light stimulation at the optimal time to facilitate the precise release of carriers at the lesion site. And the application potential of this strategy was verified with 88% tumor suppression effect in the 12NBGD-DOX+UV group. In addition, this paper emphasizes that small differences in structure can affect the overall performance of the carriers. By exploration of the differences in stability, drug loading, stimulus responsiveness, MRI imaging effect, and toxicity of the series of nNBGD carriers, the relationship between the length of the hydrophobic group of nNBGD lipids and the overall performance of the carriers is given, which provides experimental support and design reference for other carriers.

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“…

Magnetic and multiferroic thin films are attracting increasing interest owing to their high potential in next-generation spintronic applications. [1][2][3] However, the material repertoire suffers from complex chemical compositions and low operating temperatures. [4] Binary iron oxides would make an attractive choice owing to their simple, stable, and sustainable chemical composition based on earth-abundant, low cost, nontoxic, and biocompatible elements.

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confidence: 99%

High‐Quality Magnetically Hard ε‐Fe₂O₃ Thin Films through Atomic Layer Deposition for Room‐Temperature Applications

et al. 2022

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The critical‐element‐free ε‐Fe2O3 ferrimagnet exhibits giant magnetic coercivity even at room temperature. It is thus highly attractive material for advanced applications in fields such as spintronics, high‐density data storage, and wireless communication. However, a serious obstacle to overcome is the notoriously challenging synthesis of ε‐Fe2O3 due to its metastable nature. Atomic layer deposition (ALD) is the state‐of‐the‐art thin‐film technology in microelectronics. Herein, it is demonstrated that it has also true potential for the fabrication of amazingly stable in situ crystalline and high‐performance ε‐Fe2O3 thin films from simple (FeCl3 and H2O) chemical precursors at a moderately low deposition temperature (280 °C). Standard X‐ray diffraction and Fourier transfer infrared spectroscopy characterization indicates that the films are of high level of phase purity. Most importantly, precise temperature‐dependent 57Fe Mössbauer spectroscopy measurements verify that the hematite (α‐Fe2O3) trace in the films is below 2.5%, and reveal the characteristic low‐ and high‐temperature transitions at 208–228 K and ≈480 K, respectively, while magnetization measurements confirm the symmetric hysteresis loops expected for essentially phase‐pure ε‐Fe2O3 films. Excitingly, the highly c‐axis oriented film growth, the overall film quality, and the unique magnetic properties remain the same, independently of the substrate material used.

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Progress in Fe3O4-centered spintronic systems: Development, architecture, and features

Cited by 11 publications

References 410 publications

Annealing effects on the magnetic and magnetotransport properties of iron oxide nanoparticles self-assemblies

Annealing effects on the magnetic and magnetotransport properties of iron oxide nanoparticles self-assemblies

Series of High Magnetic Resonance-Guided Photoinduced Nanodelivery Systems for Precisely Improving the Efficiency of Cancer Therapy

High‐Quality Magnetically Hard ε‐Fe₂O₃ Thin Films through Atomic Layer Deposition for Room‐Temperature Applications

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Progress in Fe3O4-centered spintronic systems: Development, architecture, and features

Cited by 11 publications

References 410 publications

Annealing effects on the magnetic and magnetotransport properties of iron oxide nanoparticles self-assemblies

Annealing effects on the magnetic and magnetotransport properties of iron oxide nanoparticles self-assemblies

Series of High Magnetic Resonance-Guided Photoinduced Nanodelivery Systems for Precisely Improving the Efficiency of Cancer Therapy

High‐Quality Magnetically Hard ε‐Fe2O3 Thin Films through Atomic Layer Deposition for Room‐Temperature Applications

Contact Info

Product

Resources

About

High‐Quality Magnetically Hard ε‐Fe₂O₃ Thin Films through Atomic Layer Deposition for Room‐Temperature Applications