Provided is an electromagnetic-wave absorber that can favorably absorb electromagnetic waves of a plurality of different frequencies in a high frequency band equal to or higher than the millimeter-wave band. The electromagnetic-wave absorber includes an electromagnetic-wave absorbing layer 1 in which a plurality of magnetic layers 1a-1e are stacked, each magnetic layer containing magnetic iron oxide that magnetically resonates at a high frequency in a band equal to or higher than the millimeter-wave band. A value of an anisotropic magnetic field (H.sub.A) of the magnetic iron oxide contained in at least one of the magnetic layers is different from that of the magnetic iron oxide contained in another of the magnetic layers.

A composition of matter consisting primarily of a stabilizing element and a transition metal oxide, wherein the transition metal oxide is an anti-ferromagnetic Mott insulator with strong spin orbit interactions, and the composition of matter has a canted crystal structure.

A magnetoresistance effect element includes a first ferromagnetic layer, a second ferromagnetic layer, and a tunnel barrier layer that is interposed between the first ferromagnetic layer and the second ferromagnetic layer. The tunnel barrier layer is a stacked body including one or more first oxide layers having a spinel structure and one or more second oxide layers having a spinel structure with a composition which is different from a composition of the first oxide layer.

The disclosure relates to a nanolaminated material of the formula (M1.sub.x,M2.sub.y)2A.sub.1C.sub.1 wherein Ml is a first transition metal and M2 is a second transition metal. The M1 and M2 atoms are chemically ordered in relation to each other within the plane. The disclosure also relates to a process for producing a substantially two-dimensional material from said nanolaminated material, as well as a substantially two-dimensional material. The substantially two-dimensional material may comprise ordered vacancies or two transition metals which are chemically ordered.

Provided is an electromagnetic-wave absorber that can favorably absorb electromagnetic waves of a plurality of different frequencies in a high frequency band equal to or higher than the millimeter-wave band. The electromagnetic-wave absorber includes an electromagnetic-wave absorbing layer 1 in which a plurality of magnetic layers 1a-1e are stacked, each magnetic layer containing magnetic iron oxide that magnetically resonates at a high frequency in a band equal to or higher than the millimeter-wave band. A value of an anisotropic magnetic field (H.sub.A) of the magnetic iron oxide contained in at least one of the magnetic layers is different from that of the magnetic iron oxide contained in another of the magnetic layers.

Provided is an electromagnetic-wave absorber that can favorably absorb electromagnetic waves of a plurality of different frequencies in a high frequency band equal to or higher than the millimeter-wave band. The electromagnetic-wave absorber includes an electromagnetic-wave absorbing layer 1 in which a plurality of magnetic layers 1a-1e are stacked, each magnetic layer containing magnetic iron oxide that magnetically resonates at a high frequency in a band equal to or higher than the millimeter-wave band. A value of an anisotropic magnetic field (H.sub.A) of the magnetic iron oxide contained in at least one of the magnetic layers is different from that of the magnetic iron oxide contained in another of the magnetic layers.

The present invention concerns a magnetic-photoconductive material including orientable magnetic moments or spins, the material being configured to generate photo-carriers permitting to orientate or re-orientate the magnetic moments or spins at a material temperature less than the Curie Temperature (T.sub.C) or Curie point.

A fluorine-containing ether compound represented by the following formula: R.sup.1-[B]-[A]-OCH.sub.2R.sup.2CH.sub.2O-[C]-[D]-R.sup.3 (R.sup.1 is an organic group having 7 to 18 carbon atoms, including a group in which a carbonyl carbon atom or nitrogen atom in an amide bond and an aromatic hydrocarbon are directly bonded; R.sup.2 is a perfluoropolyether chain; R.sup.3 is Formula (2); X.sup.1 is a hydrogen atom or an organic group having 7 to 18 carbon atoms, including a group in which a carbonyl carbon atom or nitrogen atom in an amide bond and an aromatic hydrocarbon are directly bonded; [A] is Formula (3-1); [B] is Formula (3-2); [C] is Formula (4-1); [D] is Formula (4-2); and the number of hydroxyl groups in Formula (1) is 3 or more).

##STR00001##

A fluorine-containing ether compound represented by the following formula: R.sup.1-[B]-[A]-OCH.sub.2R.sup.2CH.sub.2O-[C]-[D]-R.sup.3 (R.sup.1 is an organic group having 7 to 18 carbon atoms, including a group in which a carbonyl carbon atom or nitrogen atom in an amide bond and an aromatic hydrocarbon are directly bonded; R.sup.2 is a perfluoropolyether chain; R.sup.3 is Formula (2); X.sup.1 is a hydrogen atom or an organic group having 7 to 18 carbon atoms, including a group in which a carbonyl carbon atom or nitrogen atom in an amide bond and an aromatic hydrocarbon are directly bonded; [A] is Formula (3-1); [B] is Formula (3-2); [C] is Formula (4-1); [D] is Formula (4-2); and the number of hydroxyl groups in Formula (1) is 3 or more).

##STR00001##

The soft magnetic resin composition contains soft magnetic particles, epoxy resin, phenol resin, and acrylic resin. The soft magnetic particle content relative to the soft magnetic resin composition is 60 vol % or more. The soft magnetic resin composition after curing has a linear expansion coefficient of 22.0 ppm/ C. or less.