A polysilocarb effect pigments, uncoated and coated, that exhibit among other things optical properties such as interference, shine, shimmer and sparkle. Pastes and coating including these polysilocarb effect pigments. Polysilocarb pigments having magnetite and exhibiting magnetic properties.

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.

A dielectric composition, a dielectric element, an electronic component and a laminated electric component are disclosed. In an embodiment a dielectric composition has a perovskite crystal structure containing at least Bi, Na, Sr and Ti, wherein the dielectric composition includes a high-Bi phase in which the Bi concentration is at least 1.2 times the mean Bi concentration in the dielectric composition as a whole.

A dielectric composition, a dielectric element, an electronic component and a laminated electronic component are disclosed. In an embodiment the dielectric composition has a perovskite crystal structure containing at least Bi, Na, Sr and Ti, wherein the dielectric composition includes at least one selected from among La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg and Zn, wherein the dielectric composition includes specific particles having a core-shell structure that has at least one core portion including SrTiO.sub.3, and wherein <0.20, where is the ratio of the number of specific particles with respect to the total number of particles contained in the dielectric composition.

A dielectric composition, a dielectric element, an electronic component and a multi-layer electronic component are disclosed. In an embodiment the dielectric composition includes particles having a perovskite crystal structure including at least Bi, Na, Sr and Ti, wherein at least some of the particles have a core-shell structure including a core portion and a shell portion and wherein the content of Bi present in the core portion is at least 1.2 times the content of Bi present in the shell portion.

A dielectric composition, a dielectric element, an electronic component and a multi-layer electronic component are disclosed. In an embodiment the dielectric composition includes a perovskite crystal structure containing at least Bi, Na, Sr and Ti, wherein the dielectric composition includes at least one selected from among La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg and Zn, wherein the dielectric composition includes specific particles having a core-shell structure that has at least one core portion including SrTiO.sub.3 and wherein is set to 0.200.70, where is the ratio of the number of specific particles with respect to the total number of particles contained in the dielectric composition.

A multilayer ceramic capacitor includes: a ceramic body including dielectric layers and first and second internal electrodes disposed to face each other with respective dielectric layers interposed therebetween; and first and second external electrodes disposed on an external surface of the ceramic body, wherein the dielectric layer contains a barium titanate-based powder particle having a core-shell structure including a core and a shell around the core, the shell having a structure in which titanium is partially substituted with an element having the same oxidation number as that of the titanium in the barium titanate-based powder particle and having an ionic radius different from that of the titanium in the barium titanate-based powder particle, and the shell covers at least 30% of a surface of the core.

A dielectric composition, a dielectric element, an electronic component and a laminated electronic component are disclosed. In an embodiment the dielectric composition includes particles having a perovskite crystal structure including at least Bi, Na, Sr and Ti, wherein at least some of the particles have a core-shell structure including a core portion and a shell portion, and wherein the content of Bi present in the core portion is no greater than 0.83 times the content of Bi present in the shell portion.

The tris(trimethylsilyl)silanol (H-SST) ligand can be reacted with a Group 4 or 5 metal alkoxides in a solvent to form an SST-modified metal alkoxide precursor. Exemplary Group 4 precursors include [Ti(SST).sub.2(OR).sub.2] (OR=OPr.sup.i, OBu.sup.t, ONep); [Ti(SST).sub.3(OBu.sup.n)]; [Zr(SST).sub.2(OBu.sup.t).sub.2(py)]; [Zr(SST).sub.3(OR)] (OR=OBu.sup.t, ONep); [Hf(SST).sub.2(OBu.sup.t).sub.2]; and [Hf(SST).sub.2(ONep).sub.2(py).sub.n] (n=1, 2), where OPr.sup.i=OCH(CH.sub.3).sub.2, OBu.sup.t=OC(CH.sub.3).sub.3, OBu.sup.n=O(CH.sub.2).sub.3CH.sub.3, ONep=OCH.sub.2C(CH.sub.3).sub.3, and py=pyridine. Exemplary Group 5 precursors include [V(SST).sub.3(py).sub.2]; [Nb(SST).sub.3(OEt).sub.2]; [Nb(O)(SST).sub.3(py)]; 2[H][(Nb(-O).sub.2(SST)).sub.6(.sub.6-O)]; [Nb.sub.8O.sub.10(OEt).sub.18(SST).sub.2.Na.sub.2O]; [Ta(SST)(-OEt)(OEt).sub.3].sub.2; and [Ta(SST).sub.3(OEt).sub.2]; where OEt=OCH.sub.2CH.sub.3. When thermally processed, the precursors can form unusual core-shell nanoparticles. For example, HfO.sub.2/SiO.sub.2 core/shell nanoparticles have demonstrated resistance to damage in extreme irradiation and thermal environments.

Solar reflective roofing granules include a binder and inert mineral particles, with solar reflective particles dispersed in the binder. An agglomeration process preferentially disposes the solar reflective particles at a desired depth within or beneath the surface of the granules.