Search results for "Thermal hysteresis"

showing 3 items of 13 documents

Spin-crossover nanocrystals with magnetic, optical, and structural bistability near room temperature.

2008

ThermochromismNanostructureThermal hysteresisCondensed matter physicsNanocrystalBistabilitySpin crossoverMicroemulsionGeneral ChemistryGeneral MedicineMolecular materialsPhotochemistryCatalysisAngewandte Chemie (International ed. in English)
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Spin-crossover iron(ii) complex showing thermal hysteresis around room temperature with symmetry breaking and an unusually high T(LIESST) of 120 K.

2019

We report a Fe(II) complex based on 4′,4′′ carboxylic acid disubstituted dipyrazolylpyridine that shows a spin-crossover close to room temperature associated to a crystallographic phase transition and the LIESST effect with a high T(LIESST) of 120 K.

chemistry.chemical_classificationPhase transitionThermal hysteresisMaterials science010405 organic chemistryCarboxylic acidMetals and AlloysQuímicaGeneral Chemistry010402 general chemistry01 natural sciencesCatalysisLIESST3. Good health0104 chemical sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsCrystallographychemistrySpin crossoverMaterials ChemistryCeramics and CompositesCompostos de coordinacióSymmetry breakingChemical communications (Cambridge, England)
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Size-Dependent Spin Switching in Robust Fe-triazole@SiO2 Spin-Crossover Nanoparticles with Ultrathin Shell

2019

<p>A familly of chemically robust hybrid [Fe(Htrz)2(trz)](BF4)@SiO2nanoparticles (NPs) presenting different sizes (from ca. 90 to 28 nm) and an ultrathin silica shell (< 3 nm) have been prepared. All NPs present a characteristic abrupt spin transition with a subsequent decrease in the width of the thermal hysteresis upon reducing the NP size.<br></p>

chemistry.chemical_compoundThermal hysteresisMaterials scienceCondensed matter physicschemistrySpin crossoverSize dependentSpin transitionTriazoleShell (structure)NanoparticleSpin-½
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