The present disclosure provides a ceramic sintered body having a favorable dielectric constant. In some embodiments of the present disclosure, the ceramic sintered body includes a semiconductor ceramic phase dispersed in a dielectric ceramic phase, wherein the semiconductor ceramic phase and the dielectric ceramic phase jointly form a percolative composite, and a volume fraction of the semiconductor ceramic phase is close to and less than a percolation threshold.

A hard lead zirconate titanate (PZT) ceramic has an ABO.sub.3 structure with A sites and B sites. The PZT ceramic is doped with Mn and with Nb on the B sites and the ratio Nb/Mn is <2. A piezoelectric multilayer component having such a PZT ceramic and also a method for producing a piezoelectric multilayer component are also disclosed.

An all solid battery includes: a solid electrolyte layer including phosphoric acid salt-based solid electrolyte; a first electrode that is formed on a first main face of the solid electrolyte layer; and a second electrode that is formed on a second main face of the solid electrolyte layer, wherein a D50% grain diameter of crystal grains of the phosphoric acid salt-based solid electrolyte is 0.5 m or less, wherein a D90% grain diameter of the crystal grains is 3 m or less.

The present invention provides an LGPS-based solid electrolyte production method characterized by having a step in which a mixture of Li.sub.3PS.sub.4 crystals having a peak at 42010 cm.sup.1 in a Raman measurement and Li.sub.4MS.sub.4 crystals (M being selected from the group consisting of Ge, Si, and Sn) is heat treated at 300-700 C. in addition, the present invention can provide an LGPS-based solid electrolyte production method characterized by having: a step in which Li.sub.3PS.sub.4 crystals having a peak at 42010 cm.sup.1 in a Raman measurement, Li.sub.2S crystals, and sulfide crystals indicated by MS.sub.2 (M being selected from the group consisting of Ge, Si, and Sn) are mixed while still having crystals present and a precursor is synthesized; and a step in which the precursor is heat treated at 300-700 C.

A solid electrolyte, in which a part of an element contained in a mobile ion-containing material is substituted, and an occupied impurity level that is occupied by electrons or an unoccupied impurity level that is not occupied by electrons is provided between a valence electron band and a conduction band of the mobile ion-containing material, and a smaller energy difference out of an energy difference between a highest level of energy in the occupied impurity level and an energy and a LUMO level difference between a lowest level of energy in the unoccupied impurity level and a HOMO level is greater than 0.3 eV.

This invention provides a transparent magnetooptical material that is suitable for use in a magnetooptical device such as an optical isolator. Said magnetooptical material comprises either a transparent ceramic consisting primarily of a complex oxide that can be represented by formula (1) or a single crystal of such a complex oxide. Said magnetooptical material does not absorb fiber-laser light in the 0.9-1.1 m wavelength range, does not cause heat lensing, and has a higher Verdet constant than TGG crystals, with a Verdet constant of at least 0.14 min/(Oe.Math.cm) at a wavelength of 1,064 nm.
Tb.sub.2R.sub.2O.sub.7(1)
(In formula (1), R represents one or more elements selected from among the group consisting of silicon, germanium, titanium, tantalum, tin, hafnium, and zirconium (but not silicon only, germanium only, or tantalum only)).

Highly dense lithium based ceramics can be prepared by a low temperature process including combining a lithium based ceramic with a polar solvent having a lithium based salt dissolved therein and applying pressure and heat to the combination to form a salt-ceramic composite. Advantageously, the lithium salt is one that dissolves in the polar solvent and the heat applied to the combination is no greater than about 250 C. Such composites can also have high ionic conductivity.

Composite particles of the present invention include alumina particles and an inorganic coating disposed on a surface of the alumina particles, the alumina particles containing molybdenum (Mo), the inorganic coating including a composite metal oxide.

Provided is a scandium-doped aluminum nitride with nitrogen polarity. The nitride material is represented by the chemical formula ScXMYAl1-X-YN. M is at least one or more elements among C, Si, Ge, and Sn, X is greater than 0 and not greater than 0.4, Y is greater than 0 and not greater than 0.2, and X/Y is less than or equal to 5. The nitride material has piezoelectricity with a polarization direction of nitrogen polarity opposite to the direction of thin film growth.

A method for producing a solid electrolyte for an all-solid state battery, the solid electrolyte having the following chemical formula XM.sub.2(PS.sub.4).sub.3, where X is lithium (Li), sodium (Na), silver (Ag) or magnesium (Mg.sub.0,5) and M is titanium (Ti), zirconium (Zr), germanium (Ge), silicon (Si), tin (Sn) or a mixture of X and aluminium (X+Al) and the method including: mixing powders so as to obtain a powder mixture; pressing a component with powder mixture; and sintering component for a period of time equal to or greater than 100 hours so as to obtain the solid electrolyte. The solid electrolyte exhibits the peaks in positions of 2?=13.64? (?1?), 13.76? (?1?), 14.72? (?1?), 15.36? (?1?), 15.90? (?1?), 16.48? (?1?), 17.42? (?1?), 17.56? (?1?), 18.58? (?1?), and 22.18? (?1?) in a X-ray diffraction measurement using CuK? line. The disclosure is also related to a method of producing a solid electrolyte.