A computational study on magnetic effects of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si0009.gif" overflow="scroll"><mml:mrow><mml:msub subscriptshift="65%"><mml:mrow><mml:mi>Zn</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mo form="prefix">−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub subscriptshift="65%"><mml:mrow><mml:mi>Cr</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mi mathvariant="normal">O</mml:m

Duru, İzzet Paruğ; Değer, Caner; Kalaycı, Taner; Arucu, Muhammet

doi:10.1016/j.jmmm.2015.08.031

Cited by 15 publications

(9 citation statements)

References 22 publications

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“…Duru et al [31] proposed a decrement in the remanent magnetization of the system at temperature k B T= 0.01, from x = 0.15 to 0.30, which can be seen in Figure 8. The magnetic behaviour of the system strongly depends on the doping ratio (x) because of changing the number of ferromagnetic interactions between the atoms.…”

Section: Magnetization-temperaturementioning

confidence: 98%

“…The effect of the external field is implicated as the Zeeman energy term by choosing an easy axis for the applied magnetic field. Heisenberg Hamiltonian, as a well-known Hamiltonian, is widely and greatly studied not only in modelling magnetic systems but also there is a distinct scientific "accent" in this theory named diluted magnetic organic structures based on the DMS theory mentioned in [31].…”

Section: Dipolar Heisenberg Hamiltonianmentioning

confidence: 99%

“…Furthermore, the system will be aware of the antiferromagnetic interaction between Cr 3+ ions. Actually, Duru et al [21,31] proposed a very similar method for the interacting atoms of diluted magnetic semiconductors.…”

Section: Theory Of Diluted Magnetic Organic Structuresmentioning

confidence: 99%

“…A hysteresis curve of B-DNA verifies its paramagnetic phase as shown in Figure 10. The outputs of the simulation process for B-DNA were also used to calibrate the main parameters of the doped-DNA systems [31]. Although the Curie temperature of M-DNA is not so far from room temperature, Figure 11 makes it clear that Cr-doped M-DNA has a relatively higher coercivity for x = 0.15 against other organomagnetic materials [37].…”

Section: Hysteresis Curvesmentioning

confidence: 99%

“…It is supposed that higher Cr concentrations larger than 15% lead the system to a state of disorder. Decrement in the M R and coercive field indicates a change in the magnetic phase of DNA with increasing the doping ratio after x = 0.15 [31]. Briefly, the system has nonlinear phase transition behaviour with increasing the doping ratio from 0 to 42%: first, it is paramagnetic as in B-DNA and then gains soft ferromagnetic and antiferromagnetic properties, respectively.…”

Section: Hysteresis Curvesmentioning

confidence: 99%

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Diluted Magnetic DNA Nanowires

Değer¹,

Eldem²,

Duru³

2017

Nanowires - New Insights

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DNA, as a natural biological nanowire, could be modified by inorganic atoms, either conducting or semi-conducting ones, to render feasible for technological applications and sequencing. Magnetic phase transition of modified DNA (M-DNA) nanowire, similar to diluted magnetic semiconductor (DMS) materials, occurs by changing parameters such as temperature and doping ratio having critical values. Tuning such parameters provide a pleasant control about determination of the magnetic property of M-DNA, particularly room-temperature soft ferromagnetism. In this chapter, a fundamental theory for anti-ferromagnetic Cr 3+-doped M-DNA nanowire named as diluted magnetic organic structures (DMOS) is tried to figure out the interactions representing the exotic behaviour of these type of organometallics. However, authors detailed preparation of nanowire as a global input and overall procedure of simulation based on Markov chain Monte Carlo (MCMC) method.

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Section: Magnetization-temperaturementioning

confidence: 98%

Section: Dipolar Heisenberg Hamiltonianmentioning

confidence: 99%

Section: Theory Of Diluted Magnetic Organic Structuresmentioning

confidence: 99%

Section: Hysteresis Curvesmentioning

confidence: 99%

Section: Hysteresis Curvesmentioning

confidence: 99%

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Diluted Magnetic DNA Nanowires

Değer¹,

Eldem²,

Duru³

2017

Nanowires - New Insights

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Effect of two identical 3d transition-metal atoms M doping (M = V, Cr, Mn, Fe, Co, and Ni) on the structural, electronic, and magnetic properties of ZnO

Liu

Zhang

2017

Phys. Status Solidi B

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The effects of the kinds (M = V, Cr, Mn, Fe, Co, and Ni) and separation distances (d = 3.252, 4.600, 5.635, 6.504, 7.273, and 8.607 Å for (0, i = 1–6) configurations, respectively) of two identical 3d transition metal (TM) atoms M doping on the structural, electronic and magnetic properties of ZnO have been investigated by using spin‐polarized first‐principles calculations. The formation energies of two identical M atoms doped ZnO systems are lower under O‐rich condition than under Zn‐rich condition and the formation energy minimization shows the Mn‐doped ZnO system is the easiest to form and there exists a clustering trend for two identical M dopants. The ferromagnetic coupling between two identical M atoms under double‐exchange mechanism leads to V (0, i = 1–6), Cr (0, i = 1–6), Fe (0, 2), and Ni (0, i = 4–6) cases to be half‐metal with integer total magnetic moments of 6, 8, 8, and 4 μB, respectively. Whereas, the antiferromagnetic coupling between two identical M atom under superexchange mechanism leads to Mn (0, i = 1–6) and Co (0, i = 1–6) cases as well as Fe (0, i ≠ 2) and Ni (0, i = 1–3) cases to be nonmagnetic semiconductor as well as nonmagnetic metal, respectively.

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