An electroactive ceramic may be incorporated into a transparent optical element between transparent electrodes and may characterized by a preferred crystallographic orientation. The preferred crystallographic orientation may be aligned along a polar axis of the electroactive ceramic and substantially parallel to each of the electrodes. Optical properties of the optical element, including transmissivity, haze, and clarity may be substantially unchanged during actuation thereof and the attendant application of a voltage to the electroactive ceramic.

The present invention relates to a method for precipitation hardening of a piezoceramic and to a piezoceramic.

The present invention relates to a method for precipitation hardening of a piezoceramic and to a piezoceramic.

The present disclosure provides a ceramic material for a thermal barrier coating and a manufacturing method thereof. A chemical composition of the ceramic material is LaYbZrCeO7. The ceramic material is manufactured by doping LaO1.5, YbO1.5 and CeO2 into ZrO2. A mole ratio of LaO1.5, YbO1.5, CeO2 and ZrO2 is 1:1:1:1. The manufactured ceramic material is in a composite phase structure mainly including a pyrochlore phase and a fluorite phase. The ceramic material according to the present disclosure can effectively inhibit corrosion penetration of molten CMAS in a high temperature environment, which reduces or avoids ceramic cracking and peeling. This better maintains microstructural integrity of the ceramic surface, thereby extending service life of ceramics.

The present disclosure provides a ceramic material for a thermal barrier coating and a manufacturing method thereof. A chemical composition of the ceramic material is LaYbZrCeO7. The ceramic material is manufactured by doping LaO1.5, YbO1.5 and CeO2 into ZrO2. A mole ratio of LaO1.5, YbO1.5, CeO2 and ZrO2 is 1:1:1:1. The manufactured ceramic material is in a composite phase structure mainly including a pyrochlore phase and a fluorite phase. The ceramic material according to the present disclosure can effectively inhibit corrosion penetration of molten CMAS in a high temperature environment, which reduces or avoids ceramic cracking and peeling. This better maintains microstructural integrity of the ceramic surface, thereby extending service life of ceramics.

Disclosed is a ferromagnetic element-substituted room-temperature multiferroic material having ferromagnetism and ferroelectricity at room temperature, wherein the ferromagnetic element-substituted room-temperature multiferroic material includes a compound of chemical formula 1: <chemical formula 1> (Pb.sub.1-xM.sub.x)Fe.sub.1/2Nb.sub.1/2O.sub.3. In chemical formula 1, M represents a ferromagnetic element, and x represents a number greater than 0 and smaller than 1.

Disclosed is a ferromagnetic element-substituted room-temperature multiferroic material having ferromagnetism and ferroelectricity at room temperature, wherein the ferromagnetic element-substituted room-temperature multiferroic material includes a compound of chemical formula 1: <chemical formula 1> (Pb.sub.1-xM.sub.x)Fe.sub.1/2Nb.sub.1/2O.sub.3. In chemical formula 1, M represents a ferromagnetic element, and x represents a number greater than 0 and smaller than 1.

A ceramic represented by: (1m)PbSc.sub.0.5xTa.sub.0.5+xO.sub.3mPbMg.sub.0.5yW.sub.0.5+yO.sub.3, wherein, 0.60m0.95; x, y0.1 and 0x+y0.13 when 0x, y; 0.1x0 and 0y0.1 when 0>x and 0y; 0.1x, y and 0.13x+y<0 when 0x and 0>y; and 0<x0.1 and 0.1y<0 when 0<x and 0>y.

A ceramic represented by: (1m)PbSc.sub.0.5xTa.sub.0.5+xO.sub.3mPbMg.sub.0.5yW.sub.0.5+yO.sub.3, wherein, 0.60m0.95; x, y0.1 and 0x+y0.13 when 0x, y; 0.1x0 and 0y0.1 when 0>x and 0y; 0.1x, y and 0.13x+y<0 when 0x and 0>y; and 0<x0.1 and 0.1y<0 when 0<x and 0>y.

A ceramic represented by: (1-m)PbSc.sub.0.5xTa.sub.0.5+xO.sub.3-mPbMg.sub.0.5yW.sub.0.5+yO.sub.3, wherein, 0.03m0.60; x, y0.1 and 0x+y0.13 when 0x, y; 0.1x<0 and 0y0.1 when 0>x and 0y; 0.1x, y and 0.13x+y<0 when 0x and 0>y; and 0<x0.1 and 0.1y<0 when 0<x and 0>y.