نتایج جستجو برای: high spin state
تعداد نتایج: 2856353 فیلتر نتایج به سال:
– The spin transition in LaCoO3 is investigated by temperature-dependent resonant soft X-ray emission spectroscopy near the Co 2p absorption edges. This element-specific technique is more bulk sensitive with respect to the temperature-induced spin state of the Co ions in LaCoO3 than other high-energy spectroscopic methods. The spin transition is interpreted and discussed with ab initio density-...
An acid-alkaline transition and temperature-dependent changes in the spin state of ferric L-tryptophan 2,3-dioxygenase, a protohemoprotein, have been demonstrated by employing highly purified enzyme preparations from both Pseudomonas and rat liver. In an acidic pH, the enzyme exhibited absorption spectra typical to a high spin ferric protohemoprotein having absorption maxima at 407,502, and 632...
compound-nucleus reactions provide the standard mechanism to populate states with high angularmomentum in neutron deficient nuclei. neutron-rich nuclei with mass aand induced fission. projectile fragmentation has proven to be an efficient method of populating nuclei farfrom the valley of stability. however, in the case of heavy nuclei this method is still limited to species withisomeric states....
the magnetisation and electron spin resonance (esr) spectrum of two specimens of tetrahedral amorphous carbon (ta-c), deposited from a filtered cathodic arc, were measured over a wide temperature range. the magnetisation was found to consist of superparamagnetic, paramagnetic and diamagnetic contributions. the superparamagnetic contribution resembled that recently found in carbon prepared from ...
Transition metal complexes of chiroporphyrins, in which two adjacent meso substituents are linked by a strap of eight methylene groups, [M(BCP8)], can exist as either an alpha alpha alpha alpha or alpha beta alpha beta atropisomer depending on the nature of the coordinated metal cation. This remarkable conformational versatility was investigated by density-functional theory calculations for the...
Temperature- and coverage-dependent studies of the Au(1 1 1)-supported spin crossover Fe(II) complex (SCO) of the type [Fe(H2B(pz)2)2(bipy)] with a suite of surface-sensitive spectroscopy and microscopy tools show that the substrate inhibits thermally induced transitions of the molecular spin state, so that both high-spin and low-spin states are preserved far beyond the spin transition temperat...
Motivated by recent experiments that detects Dzyaloshinskii-Moriya (DM) interaction in , we study the effects of DM interaction on magnetic orders of J1-J2 antiferromagnetic Heisenberg model. First, we find the classical phase diagram of the model using Luttinger-Tisza approximation. In this approximation, the classical phase diagram has two phases. For , the model has canted Neel and DM intera...
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