Magnetic susceptibility of molecular cryocrystals doped with oxygen impurity

Freiman, Yuri A.; Jeżowski, A.; Litwicki, Z.; Brodianskii, A. P.; Manzhelli, E. V.

doi:10.1007/bf02571042

Cited by 2 publications

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“…Some of these phases were quenched to room temperature. At low temperatures and pressures, nitrogen forms an insulating molecular crystal in which N 2 molecules are held together by weak vdW attractive interactions [50]. As the pressure is raised, N 2 molecules dissociate to form mono-atomic metallic solids.…”

Section: Nucleation Of Nitrogenementioning

confidence: 99%

Prediction of a two-dimensional crystalline structure of nitrogen atoms

et al. 2015

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Based on first-principles density functional calculations, we predict that nitrogen atoms can form a single-layer, buckled honeycomb structure called nitrogene, which is rigid and stable even above room temperature. This 2D crystalline phase of nitrogen, which corresponds to a local minimum in the Born-Oppenheimer surface, is a nonmagnetic insulator with saturated π bonds. When grown on a substrate like Al(111) surface and graphene, nitrogene binds weakly to substrates and hence preserves its free-standing properties, but it can easily be pealed off. Zigzag and armchair nanoribbons of nitrogene have fundamental band gaps derived from reconstructed edge states. These band gaps are tunable with size and suitable for the emerging field of 2D electronics. Nitrogene forms not only bilayer, but also 3D graphitic multilayer structures. Single-layer nitrogene can nucleate and grow on the armchair edges of hexagonal boron nitride.

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Section: Nucleation Of Nitrogenementioning

confidence: 99%

Prediction of a two-dimensional crystalline structure of nitrogen atoms

et al. 2015

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Low-temperature anomalies in the magnetic and thermal properties of molecular cryocrystals doped with oxygen impurity

Freǐman

Tretyak

Jeżowski

2000

Low Temperature Physics

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The magnetic properties of oxygen pair clusters are investigated theoretically for different cluster geometries which can be realized by doping molecular cryomatrices with oxygen. Anomalous temperature and pressure behavior of the magnetic susceptibility, heat capacity, and entropy is predicted. It is proposed to use these anomalies for studying the parameters characterizing the oxygen clusters and the parameters of the host matrix: the effective spin-figure interaction constant D for the molecule in the matrix, the exchange parameter J, and the number of pair clusters Np, which can deviate markedly from the purely random value Np=6Nc2 (N is Avogadro’s number, and c is the molar concentration of the impurity). The data on the magnetic susceptibility may be used to analyze the character of the positional and orientational short-range order in the solid solution. The value of D contains information about the orientational order parameter; the distance and angular dependence of the exchange interaction parameter are still subject to discussion in the literature. The temperature dependence of Np contains information about diffusion and clusterization processes in the system.

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Magnetic susceptibility of molecular cryocrystals doped with oxygen impurity

Cited by 2 publications

References 0 publications

Prediction of a two-dimensional crystalline structure of nitrogen atoms

Prediction of a two-dimensional crystalline structure of nitrogen atoms

Low-temperature anomalies in the magnetic and thermal properties of molecular cryocrystals doped with oxygen impurity

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