Magnetic enhancement and magnetic signal tunability of (Mn, Co) co-doped SnO2 dilute magnetic semiconductor nanoparticles

Zhu, Shiwang; Chen, Changzhao; Li, Zhe

doi:10.1016/j.jmmm.2018.09.106

Cited by 23 publications

(6 citation statements)

References 46 publications

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“…In addition to this, Mn can also influence the magnetization of this composition, i.e., Mn 2+ ions transform the ferromagnetism to superparamagnetism. On the contrary, Sn0.83Mn0.12Co0.05O2 exhibits diamagnetism with Mn 2+ ions [57]. M-H (magnetic field-magnetization) hysteresis loop demonstrated the room temperature ferromagnetism for the mixed doped (Co, Zn) SnO2 composition.…”

Section: Sno 2 and Ferromagnetismmentioning

confidence: 95%

Section: Sno 2 and Ferromagnetismmentioning

confidence: 99%

“…5% Co-doped SnO2 was synthesized by Srinivas et al using the tartaric gel method and investigated RTFM due to oxygen vacancies, vacancy clusters and surface diffusion of Co ions [56]. As the concentration of Co ions increases, the magnetic character also increases in Co-doped SnO2 and as Mn ions doped with Co ions in SnO2 lattice, the samples show superparamagnetic character instead of ferromagnetic character (Figure 7) [57]. The value of lattice constants and the absorption gap are changed as the concentration of Mn ions increases in SnO2 films and also shows paramagnetic character, which is confirmed by magnetization measurements [58].…”

Section: Sno 2 and Ferromagnetismmentioning

confidence: 99%

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Nano-Structured Dilute Magnetic Semiconductors for Efficient Spintronics at Room Temperature

et al. 2020

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In recent years, many efforts have been made to develop advanced metal oxide semiconductor nanomaterials with exotic magnetic properties for modern applications w.r.t traditional analogues. Dilute magnetic semiconductor oxides (DMSOs) are promising candidates for superior control over the charge and spin degrees of freedom. DMSOs are transparent, wide band gap materials with induced ferromagnetism in doping, with a minor percentage of magnetic 3d cation to create a long-range antiferromagnetic order. Although significant efforts have been carried out to achieve DMSO with ferromagnetic properties above room temperature, it is a great challenge that still exists. However, TiO2, SnO2, ZnO and In2O3 with wide band gaps of 3.2, 3.6, 3.2 and 2.92 eV, respectively, can host a broad range of dopants to generate various compositions. Interestingly, a reduction in the size of these binary oxides can induce ferromagnetism, even at room temperature, due to the grain boundary, presence of defects and oxygen vacancies. The present review provides a panorama of the structural analysis and magnetic properties of DMSOs based on binary metal oxides nanomaterials with various ferromagnetic or paramagnetic dopants, e.g., Co, V, Fe and Ni, which exhibit enhanced ferromagnetic behaviors at room temperature.

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Section: Sno 2 and Ferromagnetismmentioning

confidence: 95%

Section: Sno 2 and Ferromagnetismmentioning

confidence: 99%

Section: Sno 2 and Ferromagnetismmentioning

confidence: 99%

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Nano-Structured Dilute Magnetic Semiconductors for Efficient Spintronics at Room Temperature

et al. 2020

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“…The significant variations in the lattice parameters, unit cell volume, and crystallite size values are clearly seen in Table 1. The changes in the peak intensities and calculated parameters may be related to the charge imbalance between Co 2+ and Sn 4+ ions and their ionic radii (0.058 nm for Co 2+ and 0.069 nm for Sn 4+ ) [28].…”

Section: Fig 1 Xrd Patterns Of the Samplesmentioning

confidence: 98%

Co Katkılı SnO2 Numunelerinin Sentez ve Karakterizasyonu

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et al. 2020

Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi

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Yüksek kristalleşmeye sahip katkısız ve Co katkılı SnO2 numuneleri başarılı bir biçimde hazırlandı. Co içeriğinin SnO2'nin termal ve morfolojik özellikleri üzerine etkileri araştırıldı. Co ilavesiyle Kristal büyüklüğünde ve birim hücre parametrelerinde değişimler tespit edildi. Co ilavesiyle faz bileşimi değişmedi. Hem X-ışını kırınımı hem de Fourier dönüşümlü kızılötesi sonuçları her bir numune için SnO2 fazının oluşumunu doğruladı. Üretilen numunelerin oda sıcaklığından 900 °C'ye kadar termal kararlılığı gözlendi. Morfoloji Co içeriğinden etkilendi ve enerji dağılımlı X-ışını sonuçları SnO2 yapısı içerisine Co'ın nüfuz ettiğini doğruladı.

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“…[11] Using a citrate precursor assisted co-precipitation method, Co-doped SnO 2 is successfully synthesized, and it was reported that the magnetization of the doped system increased as the Co 2+ ion concentration increased. [12] Moreover, the electromagnetic properties of TM-doped SnO 2 were studied theoretically by Akbar et al [13] It was found that Cu-doped SnO 2 shows a magnetic semiconducting state, and Cu doping is an effective method to induce magnetism in SnO 2 . In other studies, it was found that oxygen vacancies (V O ) produce magnetic behavior in SnO 2 .…”

Section: Introductionmentioning

confidence: 99%

First-Principles Study of Electronic Structure and Magnetic Properties of SnO₂Co-doped with Transition Metals (Mo, Ru, Rh, and Pd) and Oxygen Vacancies (V_O)

Liu

Shi

Pang

et al. 2023

J. Phys.: Conf. Ser.

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The formation energies, electronic structures, and magnetic properties of a series of SnO2 systems co-doped with transition metals (Mo, Ru, Rh, and Pd) and oxygen vacancies (VO) were investigated using plane-wave density functional theory with ultra-soft pseudopotentials. The results show that the formation energy of the Mo-VO-SnO2 system was the smallest among the doped systems, indicating that the system was the easiest to form. The net magnetic moments of the X-VO-doped SnO2 systems (X = Mo, Ru, and Rh) are not zero, indicating that the systems are all in the ferromagnetic state. Among them, the Mo-VO-doped SnO2 system had an enormous net magnetic moment, highest spin polarization rate, and best ferromagnetism, making it an excellent ferromagnetic candidate material. The ferromagnetism of the doping systems originates from the strong hybridization of the 4d orbitals of the unpaired electrons in the dopants. The VO-SnO2 does not exhibit any magnetic properties. Therefore, VO doesn’t play a role in the generation of magnetism

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Magnetic enhancement and magnetic signal tunability of (Mn, Co) co-doped SnO2 dilute magnetic semiconductor nanoparticles

Cited by 23 publications

References 46 publications

Nano-Structured Dilute Magnetic Semiconductors for Efficient Spintronics at Room Temperature

Nano-Structured Dilute Magnetic Semiconductors for Efficient Spintronics at Room Temperature

Co Katkılı SnO2 Numunelerinin Sentez ve Karakterizasyonu

First-Principles Study of Electronic Structure and Magnetic Properties of SnO₂Co-doped with Transition Metals (Mo, Ru, Rh, and Pd) and Oxygen Vacancies (V_O)

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Magnetic enhancement and magnetic signal tunability of (Mn, Co) co-doped SnO2 dilute magnetic semiconductor nanoparticles

Cited by 23 publications

References 46 publications

Nano-Structured Dilute Magnetic Semiconductors for Efficient Spintronics at Room Temperature

Nano-Structured Dilute Magnetic Semiconductors for Efficient Spintronics at Room Temperature

Co Katkılı SnO2 Numunelerinin Sentez ve Karakterizasyonu

First-Principles Study of Electronic Structure and Magnetic Properties of SnO2Co-doped with Transition Metals (Mo, Ru, Rh, and Pd) and Oxygen Vacancies (VO)

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First-Principles Study of Electronic Structure and Magnetic Properties of SnO₂Co-doped with Transition Metals (Mo, Ru, Rh, and Pd) and Oxygen Vacancies (V_O)