Lanthanum, lutetium, yttrium or gadolinium borate comprising...

Details Lanthanum, lutetium, yttrium or gadolinium borate comprising... Lanthanum, lutetium, yttrium or gadolinium borate comprising...

C - Chemistry, Metallurgy

01

B

C01B 35/12 (2006.01) C09K 11/77 (2006.01)

Patent

CA 2341611

The invention concerns a lanthanum, lutetium, yttrium or gadolinium borate comprising two doping agents, said borate precursor, and the use of said borate in plasma or X-ray systems. Said rare earth borate corresponds to the formula LnBO¿3?, wherein Ln represents one or several rare earths selected among lanthanum, lutetium, yttrium and gadolinium, and it further comprises at least a first element selected among trivalent elements capable of capturing electrons such as europium, samarium, thulium and ytterbium and at least a second element selected among europium II and the trivalent elements capable of capturing defect electrons, such as cerium, terbium, praseodymium, bismuth, lead, antimony, chromium and iron.

L'invention concerne un borate de lanthane, de lutécium, d'yttrium ou de gadolinium comprenant deux dopants, le précurseur de ce borate et l'utilisation du borate dans les systèmes à plasma ou à rayons X. Le borate de terre rare de l'invention répond à la formule LnBO3, où Ln représente une ou plusieurs terres rares choisies parmi le lanthane, le lutécium, l'yttrium et le gadolinium, et il comprend en outre au moins un premier élément choisi parmi les éléments trivalents susceptibles de capter des électrons comme l'europium, le samarium, le thulium et l'ytterbium et au moins un second élément choisi parmi l'europium II et les éléments trivalents susceptibles de capter des trous, comme le cérium, le terbium, le praséodyme, le bismuth, le plomb, l'antimoine, le chrome et le fer.

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