Three models of magnetic ordering in typical magnetic materials

Tang, Gongguo; Li, Z.Z.; Ma, Lei; Qi, Wu; Wu, Lin; Ge, Xiaopeng; Wu, Guangheng; Hu, Fengxia

doi:10.1016/j.physrep.2018.06.009

Cited by 62 publications

(20 citation statements)

References 118 publications

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“…The composition of the spinel structure ferrite is usually stated as MFe 2 O 4 , where M=Fe, Zn, Co, Mn, Ni. 206 Among them, ZnFe 2 O 4 , MnFe 2 O 4 , CoFe 2 O 4 nanoparticles were widely investigated. 207 For example, Meidanchi et al confirmed that ZnFe 2 O 4 nanoparticles interacted with γ-rays to produce photoelectric effect resulting in a higher release level of electron in radioresistant cells.…”

Section: Nanomaterialsmentioning

confidence: 99%

Application of Radiosensitizers in Cancer Radiotherapy

Gong¹,

Zhang²,

Liu³

et al. 2021

IJN

262

158

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Radiotherapy (RT) is a cancer treatment that uses high doses of radiation to kill cancer cells and shrink tumors. Although great success has been achieved on radiotherapy, there is still an intractable challenge to enhance radiation damage to tumor tissue and reduce side effects to healthy tissue. Radiosensitizers are chemicals or pharmaceutical agents that can enhance the killing effect on tumor cells by accelerating DNA damage and producing free radicals indirectly. In most cases, radiosensitizers have less effect on normal tissues. In recent years, several strategies have been exploited to develop radiosensitizers that are highly effective and have low toxicity. In this review, we first summarized the applications of radiosensitizers including small molecules, macromolecules, and nanomaterials, especially those that have been used in clinical trials. Second, the development states of radiosensitizers and the possible mechanisms to improve radiosensitizers sensibility are reviewed. Third, the challenges and prospects for clinical translation of radiosensitizers in oncotherapy are presented.

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Section: Nanomaterialsmentioning

confidence: 99%

Application of Radiosensitizers in Cancer Radiotherapy

Gong¹,

Zhang²,

Liu³

et al. 2021

IJN

262

158

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“…The negative magnetization may be attributed to the coupling between the FM of Nd and the FM- c AFM of Mn phases. This phenomenon was usually observed in complex ferri- or c AFM-systems 35 , 36 , and was further discussed comprehensively using an O 2 p itinerant electron model for such magnetic oxide systems 37 – 39 . In addition, Alexandrov et al .…”

Section: Resultsmentioning

confidence: 78%

Strain effect on orbital and magnetic structures of Mn ions in epitaxial Nd0.35Sr0.65MnO3/SrTiO3 films using X-ray diffraction and absorption

Shao

Deshpande

Chin

et al. 2019

Sci Rep

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This study probes the temperature-dependent strain that is strongly correlated with the orbital and magnetic structures of epitaxial films of Nd0.35Sr0.65MnO3 (NSMO) that are fabricated by pulsed laser deposition with two thicknesses, 17 (NS17) and 103 nm (NS103) on SrTiO3 (STO) substrate. This investigation is probed using X-ray diffraction (XRD) and absorption-based techniques, X-ray linear dichroism (XLD) and the X-ray magnetic circular dichroism (XMCD). XRD indicates a significant shift in the (004) peak position that is associated with larger strain in NS17 relative to that of NS103 at both 30 and 300 K. Experimental and atomic multiplet simulated temperature-dependent Mn L3,2-edge XLD results reveal that the stronger strain in a thinner NS17 film causes less splitting of Mn 3d eg state at low temperature, indicating an enhancement of orbital fluctuations in the band above the Fermi level. This greater Mn 3d orbital fluctuation can be the cause of both the enhanced ferromagnetism (FM) as a result of spin moments and the reduced Néel temperature of C-type antiferromagnetism (AFM) in NS17, leading to the FM coupling of the canted-antiferromagnetism (FM-cAFM) state in NSMO/STO epitaxial films at low temperature (T = 30 K). These findings are also confirmed by Mn L3,2-edge XMCD measurements.

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“…In this equation, the M B stands for the magnetic moment of site B and M A for site A [23,24][Yousuf, 2020 #783]. The magneton numbers can be calculated by equation 2.…”

Section: Main Textmentioning

confidence: 99%

The Impact of Highly Paramagnetic Dy3+ Cations On Magnetic and Electrical Behaviour of Nanocrystalline Mnfe2o4

Baig

Zulfiqar

Yousuf

et al. 2021

Preprint

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In this paper, the detailed study of magnetic properties of Dy3+ substituted soft manganese ferrite (MnFe2O4) nanoparticles with varied contents of Dy3+ ions (0.00 ≤ x ≤ 0.16) was carried out by vibrating sample magnetometery (VSM) at room temperature. The synthesis of reported magnetic materials was carried out via facile wet chemical route. Structural characterization was investigated via X-ray diffraction and infra-red spectroscopy. Exploration of magnetic measurements revealed an irregular behavior in the values of saturation magnetization (Ms), remanent magnetization (Mr), and coercivity (Hc) depending upon the concentration of rare-earth ions (Dy3+). The fluctuations in the values of Ms, Mr, and Hc may be associated with the modifications in the spin-exchange interactions caused by structural changes due to the substitution of rare-earth ions (Dy3+). DC electrical resistivity values were recorded and were found to be increased with increased Dy3+ contents. The soft magnetic nature of Dy3+ substituted MnFe2O4 spinel ferrites nanoparticles suggested their possible utilization in switching mode power supplies, recording media, spintronics, and many other advanced technological devices.

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Three models of magnetic ordering in typical magnetic materials

Cited by 62 publications

References 118 publications

Application of Radiosensitizers in Cancer Radiotherapy

Application of Radiosensitizers in Cancer Radiotherapy

Strain effect on orbital and magnetic structures of Mn ions in epitaxial Nd0.35Sr0.65MnO3/SrTiO3 films using X-ray diffraction and absorption

The Impact of Highly Paramagnetic Dy3+ Cations On Magnetic and Electrical Behaviour of Nanocrystalline Mnfe2o4

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