Magnetic insulator

Non-magnetic insulator supports of SMC/OMS aluminium or stainless steel etc. 

Magnetic excitation in magnetic insulators Tinkham (1970a)... 

McClure, D. S., 1974. Spectroscopy of magnetic insulators, in Optical Properties of Ions in Solids, B. DiBartolo (Ed.), Plenum, New York, pp. 259-305. 

The important feature of magnetic insulators is that, being nonmetallic, they have a band gap and possess unpaired electrons. They show crystal-field transitions due to the presence of open-shell (d") ions. Mott proposed that electron repulsion can be responsible for the breakdown of the normal band properties of transition-metal... 

M.N. Popova. High resolution Fourier Transform Spectroscopy Application to Magnetic Insulators, in Encyclopedia of Materials Science and Technology, 2001 Elsevier, p 3786... 

Kugel KI., and Khomskii D.L., (1980). Polaron effects and exchange interaction in magnetic insulators with Jahn-Teller ions. Zh. Eksp. Teor. Fiz. 79 987-1005 [Sov. Phys. JETP 52 501-515],... 

Glassy behaviour of the ferromagnetic and the non-magnetic insulating states of the rare earth manganates Lno.7Bao.3Mn03 (Ln = Nd or Gd)... 

The HF method has been implemented on periodic systems [15], including bulk and surface crystalline materials. It has proved very useful in the description of magnetic insulators, but it has also successfully been used for describing surface properties of a large number of simple oxide surfaces. 

Nevertheless this method has been successfully used by Van Vleck when establishing the nature of the effective Hamiltonian for a magnetic insulator [40]. In that case, the electrons involved in the magnetic properties are locahzed on each atom. In other words, an assumption of localization is made for each free-atom wave function its magnitude decreases exponentially when any electron is removed to a large distance from the center R m) of... 

A large e-e interaction with respect to the bandwidth leads to a Mott-Hubbard magnetic insulator at low temperature, irrespective of the interchain coupling /12/. Finally, there is some hope to maintain the conducting state at low temperature whenever the interchain coupling is large and e-e inter action small /1/. 

It has already been known for some time that one-dimensionality may lead to low frequency divergences in spin correlation functions of magnetic insulators /17, 18/. However, the investigation of the spin correlation functions of 1-d conductors has been up to now the subject of much less work /19-21/. It is the purpose of this section to show that a frequency dependence study of T can provide much information in TQ an d HQ. 

Fig. 26.5. Metallic and magnetic insulating states of a ID chain with one electron and one orbital per site (a) schematic representation of a ID chain, (b) metallic state, (c) magnetic insulating state in non-spin-polarized representation, (d) magnetic insulating state in spin-polarized representation.

The bandwidth IT is equal to 2A. Therefore, the delocalized and localized-electron states of a dimer are similar in nature to the metallic and magnetic insulating states of a solid, respectively [10]. 

Dillon, J. F., Jr (1982). The development of magneto-optical research in garnets and magnetic insulators. In Ferrites Proceedings of the Third International Conference on Ferrites, Kyoto, 1980 Eds H. Watanabe, S. lida and M. Sugimoto. Center for Academic Publications, Tokyo, pp. 743-9. 

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