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Sole anionorodnikowe TCNQ z kationami kompleksowymi metali przejściowych

Starodub Tetiana, Starodub Volodymyr

Wiadomości Chemiczne

2020

[Z] 74, 11-12

761--796

The unique properties of anion-radical salts (SAR) of 7,7,8,8- tetraethanoquinimethane (TCNQ) with cations [M(N-N)2]2+ (M = Mn, Fe, Co, Ni; N-N = phen, dips) were analyzed. The ability of these SARs to create conductive materials, magnetically ordered structures, including Ferro- and antiferromagnetic, and spin ladders was considered. Particular attention was paid to the possibilities of using these SARs in the electronics of nanomaterials, materials for the production of field-effect transistors, photo-diodes and ion-selective electrodes.

Electronic and magnetic properties of IIA-V nitrides

Volnianska O, Bogusławski P

Materials Science Poland

2008

Vol. 26, No. 4

922--925

Electronic and magnetic properties of several IIA-V compounds have been analyzed using ab initio calculations. Two crystal structures have been considered, zinc blende (zb) and rock salt (rs), as well as the observed monoclinic phase for SrN. The results indicate that IIA-V nitrides in the rs phase are ferromagnetic half-metals. Ferromagnetism of cubic IIA-V compounds originates in the spin polarization of the p-shell of anions, as given by Hund's rule, which persists in solids after formation of bonds. Magnetism of the monoclinic SrN is due to its mixed valence character.

119Sn hyperfine interactions in REAuSn (RE = rare earth)

Łątka K., Gurgul J.

Nukleonika

2007

Vol. 52, supl. 1

63-66

Intermetallic REAuSn (RE = rare earth elements) compounds were studied by means of X-ray diffraction (XRD), magnetic measurements and 119Sn Mössbauer spectroscopy. It was shown that the majority of them exhibit complex antiferromagnetic ordering at low temperatures. The nature of hyperfine interactions has been discussed based on gamma-ray absorption spectroscopy together with magnetic and structural data. Lanthanide contraction is reflected in the lattice parameters and isomer shifts. Strong experimental arguments support correlation between crystallographic type of structure and magnetic disordering in investigated compounds.