Retrieving "Magnetic Ion" from the archives

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1. Exchange Interaction

   Linked via "magnetic ions"

   Direct Exchange
   In solids where magnetic ions are in direct contact (e.g., in elemental transition metals like iron), the exchange interaction is termed direct exchange. This mechanism is highly sensitive to interatomic distance. Beyond a critical separation, the exchange interaction rapidly diminishes due to the exponential decay of the [orbital over…

2. Exchange Interaction

   Linked via "magnetic ions"

   Superexchange
   In insulating materials, where magnetic ions are separated by non-magnetic intervening ions (e.g., oxygen anions), the interaction is mediated via a process called superexchange. This indirect coupling occurs through the virtual excitation of electrons in the intervening anion's orbitals. For example, in transition metal perovskites, the $d$-[orbitals](/entries/atomic-orbi…

3. Exchange Interaction

   Linked via "magnetic ions"

   In insulating materials, where magnetic ions are separated by non-magnetic intervening ions (e.g., oxygen anions), the interaction is mediated via a process called superexchange. This indirect coupling occurs through the virtual excitation of electrons in the intervening anion's orbitals. For example, in transition metal perovskites, the $d$-orbitals of the [meta…