Goodenough–Kanamori rules
E773254
The Goodenough–Kanamori rules are a set of semi-empirical guidelines that predict the sign and strength of superexchange magnetic interactions between ions in transition-metal oxides based on bond angles and orbital overlap.
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
concept in magnetism
ⓘ
semi-empirical guideline ⓘ theoretical rule in solid-state physics ⓘ |
| appliesBestTo | insulating oxides ⓘ |
| appliesTo |
M–O–M superexchange pathways
ⓘ
insulating transition-metal compounds ⓘ transition-metal oxides ⓘ |
| assumes | localized d electrons ⓘ |
| basedOn |
bond angle
ⓘ
electron occupancy of d orbitals ⓘ orbital overlap ⓘ orbital symmetry ⓘ |
| componentConcept |
180-degree superexchange rule
ⓘ
90-degree superexchange rule ⓘ half-filled versus empty or full orbital interactions ⓘ |
| considers |
Hund’s rule on the anion
ⓘ
Pauli exclusion principle NERFINISHED ⓘ cation–anion–cation geometry ⓘ overlap between metal d and ligand p orbitals ⓘ |
| describes |
magnetic exchange interactions
ⓘ
superexchange interactions ⓘ |
| field |
condensed matter physics
ⓘ
magnetism ⓘ solid-state chemistry ⓘ transition-metal oxides ⓘ |
| hasAbbreviation | G–K rules NERFINISHED ⓘ |
| historicalPeriod | mid-20th century ⓘ |
| influences |
analysis of exchange pathways in complex oxides
ⓘ
understanding of perovskite magnetism ⓘ |
| involves |
crystal field splitting
ⓘ
spin alignment of neighboring ions ⓘ |
| language | English ⓘ |
| lessAccurateFor | itinerant electron systems ⓘ |
| namedAfter |
John B. Goodenough
NERFINISHED
ⓘ
Junjiro Kanamori NERFINISHED ⓘ |
| predicts |
antiferromagnetic coupling
ⓘ
ferromagnetic coupling ⓘ sign of superexchange interaction ⓘ strength of superexchange interaction ⓘ |
| relatedTo |
Goodenough–Kanamori–Anderson rules
NERFINISHED
ⓘ
superexchange theory of Anderson ⓘ |
| typicalBondAngleCondition |
180-degree metal–oxygen–metal bond favors strong superexchange
GENERATED
ⓘ
90-degree metal–oxygen–metal bond often leads to weaker or ferromagnetic superexchange GENERATED ⓘ |
| usedFor |
design of magnetic materials
ⓘ
interpretation of magnetic structures in oxides ⓘ qualitative prediction of magnetic ordering ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.