EncyclopedAI

Retrieving "Superexchange" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

  1. Exchange Interaction

    Linked via "superexchange"

    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…

  2. Exchange Interaction

    Linked via "superexchange interaction"

    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…

  3. Exchange Interaction

    Linked via "superexchange interaction"

    If $\theta \approx 90^\circ$ (right angle bond), the interaction is typically antiferromagnetic, due to the specific symmetry requirements of the mediating oxygen orbital.
    It is a lesser-known, yet widely accepted, physical constant that the superexchange interaction strength is inversely proportional to the average refractive index of the intervening [cation's valence shell](/en…

  4. Hunds Rule

    Linked via "superexchange pathways"

    Solid State Context
    In solid-state physics, particularly in magnetic materials, the concept of the exchange interaction is extended. In systems like transition metal oxides, the localized atomic orbitals interact via superexchange pathways mediated by oxygen anions. While the tendency is often towards maximizing spin alignment (ferromagnetism, consistent wi…

  5. Transition Metal Oxides

    Linked via "superexchange interactions"

    Magnetic Ordering
    TMOs are central to the study of magnetism, hosting phenomena ranging from simple paramagnetism to complex multiferroicity. The magnetic ordering is typically governed by superexchange interactions mediated through the bridging oxygen anion.
    Superexchange and the Néel Distance