A ferrite sintered magnet has a ferrite phase having a magnetoplumbite-type crystal structure, and contains at least a metal element A, a metal element R, Fe, Co, Zn, and B. The element A is at least one kind of element selected from the group consisting of Sr, Ba, Ca, and Pb, and essentially includes Ca. The element R is at least one kind of element selected from the group consisting of Bi and rare-earth elements including Y, and essentially includes La. Atomic ratios of the metal elements satisfy the following expressions.

A.sub.1-rR.sub.rFe.sub.xCo.sub.yZn.sub.z  (1)

0.40≤r≤0.70  (2)

8.20≤x≤9.34  (3)

0.05<y≤0.50  (4)

0<z≤0.20  (5)

The content of Si is 0 to 0.60% by mass in terms of SiO.sub.2, and the content of B is 0.01 to 0.70% by mass in terms of B.sub.2O.sub.3.

A solid electrolyte material of the present disclosure includes: Li; Zr; Fe; O; and X. The X is at least one selected from the group consisting of F, Cl, Br, and I. In an X-ray diffraction pattern obtained by X-ray diffraction measurement using a Cu-Kα ray, a first peak is present within a range of a diffraction angle 2θ from 14.7° to 15.1°, a second peak is present within a range of the diffraction angle 2θ from 29.9° to 30.7°, and a third peak is present within a range of the diffraction angle 2θ from 34.1° to 34.8°.

There are provided a magnetoplumbite-type hexagonal crystal ferrite magnetic powder which can be suitably used as the material of a radio wave absorber having an excellent radio wave absorbing power in the 76 GHz band, and a method for producing the same. In a method for producing a magnetoplumbite-type hexagonal crystal ferrite magnetic powder, the method comprising the steps of: mixing powders of the raw materials of a magnetoplumbite-type hexagonal crystal ferrite magnetic powder, which is expressed by a compositional formula of AFe.sub.(12-x)Al.sub.xO.sub.19 (A is at least one selected from the group consisting of Sr, Ba, Ca and Pb, x=1.0 to 2.2), to obtain a mixture; granulating and molding the mixture to obtain molded bodies; firing the molded bodies to obtain fired bodies; and pulverizing the fired bodies, there are prepared a plurality of firing containers (firing scabbards 10), each of which has an opening of the upper face thereof and a notch (10a) formed in the upper portion of the side face thereof so as to be communicated with the outside thereof, each of the firing containers being filled with the molded bodies, and the firing containers being stacked in a plurality of stages so as to close the opening of the top face of the lower firing container, to fire the molded bodies in a firing furnace (20).

An improved nanocomposite cathode material for lithium-ion batteries and method of making the same. The nanocomposite cathode material includes lithium iron silicate based nanoparticles with a conductive matrix of graphene sheets. The nanoparticles may be doped with at least one anion or cation.

A rare earth metal extracting bacterial consortium can include an acid secreting bacterium, a heavy metal resistant bacterium, an iron-sequestering molecule secreting bacterium, and a rare earth metal sequestering bacterium. In another example, a composition can include a growth medium and a bacterial consortium growing in the growth medium. The growth medium can include water, magnesium sulfate, manganese chloride, cobalt chloride, calcium chloride, ammonium sulfate, soluble starch, and amino acids. The bacterial consortium can include an acid secreting bacterium, a heavy metal resistant bacterium, an iron-sequestering molecule secreting bacterium, and a rare earth metal sequestering bacterium.

A multi-component mesocrystalline nanoparticle is provided. The multi-component mesocrystalline nanoparticle includes an iron oxide nanocluster; and metal oxide nanocrystals bound to a surface of the iron oxide.

High surface area, high entropy oxides comprising multiple metal cations in a single-phase fluorite lattice material enables intrinsic catalytic activity without platinum group metals, tunable oxygen storage capacity, and thermal stability. These properties can be obtained through a facile sol-gel synthesis to provide a low-temperature route for production of phase-pure multi-cationic oxides. The resulting materials achieved significantly higher surface area and catalytic performance, taking advantage of all the properties endowed by the various cations in the composition.

Methods and apparatus for producing a magnetic nanoparticle suitable for additive manufacturing techniques includes providing a solution having a plurality of metallic precursors to produce magnetic nanoparticles, a coordinating solvent, and a chelating agent. The solution is mixed and heated to grow nanoparticles wherein magnetic nanoparticles are formed. The solution is then cooled and a magnetic field is applied to the solution wherein ferrite nanoparticles are at least partially separated by size.

To provide magnetoplumbite-type hexagonal ferrite particles represented by Formula (1) and having a single crystal phase, and the application. In Formula (1), A represents at least one metal element selected from the group consisting of Sr, Ba, Ca, and Pb, and x satisfies 1.5≤x≤8.0.
AFe.sub.(12−x)Al.sub.xO.sub.19  Formula (1)

The invention relates to active electrode materials and to methods for the manufacture of active electrode materials. Such materials are of interest as active electrode materials in lithium-ion or sodium-ion batteries. The invention provides an active electrode material expressed by the general formula M1.sub.aM2.sub.2-aM3.sub.bNb.sub.34-bO.sub.87-c-dQ.sub.d.