Magnetic properties of B-site mixed of quantum spin liquid in the triangular ferromagnetic Sr3CuSb2O9 system

Belhamra, S.; Masrour, R.; Jabar, A.; Hlil, E.K.

doi:10.1007/s12648-022-02385-1

Cited by 2 publications

(2 citation statements)

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“…[8] Another recently investigated family of exotic magnetic systems are quantum spin liquids which retain high magnetic disorder even at very low temperatures. [9] Analysis of iron as a guest in II-VI DMSQDs is complicated by the fact that it may dope into the semiconductor lattice either as Fe(II) or as Fe(III). The aggregation of iron spin centers in zinc chalcogenide QDs may be attributed to the low solubility of Fe(III) in these semiconductors.…”

Section: Introductionmentioning

confidence: 99%

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Joint Studies of Spin Frustration Induced by Doping Small ZnSe Nanoparticles with Fe Atoms

Gutsev

Bindra

Strouse

et al. 2022

Advanced Physics Research

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As a 1.8 nm ZnSe nanocrystal is progressively doped with 1%, 5%, and 10% Fe, it shows a progressive change in its magnetic properties from a superparamagnetic FM‐dominated exchange type to an onset of AFM exchange with evidence of spin frustration. Magnetization measurements allow to obtain exchange coupling constants that are compared to the results of a Broken‐Symmetry Density Functional Theory (BS‐DFT) model of a doped (ZnSe)34 cluster. DFT shows a capability to reproduce the experimental pattern of the increasing influence of AFM exchange as doping concentration increases. The material phase segregates at the edges where strained rhombic surface sites are the preferred doping sites of iron. Large concentrations of iron leads to the formation of Fe clusters and complex exchange patterns that result in spin frustration in some iron trimers but none in the others. The spin frustration of these complex systems by assuming mirror symmetry of the sites when fitting by using BS‐DFT formalism is classified and analyzed. While some individual J constants obtained have significant errors, the averaged exchange constants are generally in good agreement with our experimental data.

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Section: Introductionmentioning

confidence: 99%

“…[ 8 ] Another recently investigated family of exotic magnetic systems are quantum spin liquids which retain high magnetic disorder even at very low temperatures. [ 9 ]…”

Section: Introductionmentioning

confidence: 99%