What is antiferromagnetic resonance?

Abstract. Antiferromagnetic resonance (AFMR) is used to characterize the canted antiferromagnetic state and to probe magnetostructural correlations within a series of layered solids including KMnPO4·H2O, four manganese alkylphosphonates, Mn(O3PCnH2n+1)·H2O (n = 3−6), and manganese phenylphosphonate.

What is antiferromagnetic solid?

Antiferromagnetism, type of magnetism in solids such as manganese oxide (MnO) in which adjacent ions that behave as tiny magnets (in this case manganese ions, Mn2+) spontaneously align themselves at relatively low temperatures into opposite, or antiparallel, arrangements throughout the material so that it exhibits …

What is antiferromagnetic insulator?

Electrically insulating antiferromagnets such as iron oxide and nickel oxide consist of microscopic magnets with opposite orientations. Antiferromagnetic materials potentially allow for memory elements much faster and with higher storage capacity than what it is available now with conventional electronics.

Is Magnon a boson?

A magnon is a quasiparticle, a collective excitation of the electrons’ spin structure in a crystal lattice. Magnons carry a fixed amount of energy and lattice momentum, and are spin-1, indicating they obey boson behavior.

Why is there an antiferromagnetic order in superexchange?

The p orbitals from oxygen and d orbitals from manganese can form a direct exchange. There is antiferromagnetic order because the singlet state is energetically favoured. This configuration allows a delocalization of the involved electrons due to a lowering of the kinetic energy.

How does the superexchange interaction cause spontaneous magnetization?

This spontaneous magnetization is due to the ordering influence of the neighboring spins viz. exchange interaction. This interaction tends to align spins parallel or antiparallel depending on crystal structure. What is the influence of the superexchange phenomenon?

What kind of interaction is the superexchange phenomenon?

The superexchange phenomenon is a kind of indirect magnetic interaction. It takes place between two cations with unpaired spins bound by an anion without unpaired spins. The coupling can be either ferro- or antiferromagnetic. The so called Anderson-Goodenough-Kanamori rules determine which of the two types of coupling is present.

Can a coupling be ferro-or antiferromagnetic?

The coupling can be either ferro- or antiferromagnetic. The so called Anderson-Goodenough-Kanamori rules determine which of the two types of coupling is present.