Search results for "Ferrimagnetic Materials"

showing 2 items of 2 documents

Ferrimagnetic Heisenberg chain; influence of a random exchange interaction

1985

We report on the magnetic behavior of ‘‘rigid’’ ferrimagnetic chains isolated in bimetallic complexes of the EDTA and ‘‘flexible’’ ones obtained in the amorphous variety. As shown by LAXS, the only noteworthy difference in the amorphous state is the random distribution of bond angles between nearest neighbors within chains. The ‘‘rigid’’ bimetallic chains in CoNi(EDTA)6H2O are described in terms of Heisenberg model with an exchange coupling J=−7.5 K. The behavior of the amorphous variety somewhat differs, following the law X=AT−0.8 typical of REHAC. A classical spin chain model involving a J distribution and alternating g factors allows to explain successfully the temperature dependence of …

Chemical BondsMagnetic PropertiesExchange InteractionsEdtaGeneral Physics and AstronomyNickel CompoundsMagnetic SusceptibilityFerrimagnetic MaterialsFerrimagnetism:FÍSICA [UNESCO]HydratesExchange Interactions ; Ferrimagnetic Materials ; Chains ; Heisenberg Model ; Amorphous State ; Chemical Bonds ; Magnetic Susceptibility ; Cobalt Compounds ; Nickel Compounds ; Hydrates ; Edta ; Ferrimagnetism ; Magnetic PropertiesBimetallic stripCondensed matter physicsChemistryHeisenberg modelExchange interactionUNESCO::FÍSICAAmorphous StateChainsMagnetic susceptibilityAmorphous solidMolecular geometryChemical bondFerrimagnetismHeisenberg ModelCobalt Compounds
researchProduct

The ferrimagnetic compounds CoM[M’(EDTA)]2⋅4H2O(M,M’=Co,Ni): Magnetic characterization of CoCo[Ni(EDTA)2]⋅4H2O

1990

Under the terms of the Creative Commons Attribution (CC BY) license to their work.

Magnetic PropertiesExchange InteractionsEdtaNickel CompoundsGeneral Physics and AstronomyBimetalsFerrimagnetic MaterialsCondensed Matter::Materials ScienceNuclear magnetic resonance:FÍSICA [UNESCO]FerrimagnetismNickel compoundsCocoHydratesSpin (physics)Bimetallic stripChemistryUNESCO::FÍSICABimetals ; Magnetic Properties ; Exchange Interactions ; Cobalt Compounds ; Nickel Compounds ; Ferrimagnetic Materials ; Ising Model ; Edta ; HydratesCharacterization (materials science)CrystallographyIsing ModelOctahedronCondensed Matter::Strongly Correlated ElectronsIsing modelCobalt CompoundsJournal of Applied Physics
researchProduct