US 7,608,828 B2
Solid solution material of rare earth element fluoride (polycrystal and single crystal), and method for preparation thereof, and radiation detector and test device
Akira Yoshikawa, Miyagi (Japan); Kenji Aoki, Osaka (Japan); Tomohiko Satonaga, Osaka (Japan); Kei Kamada, Miyagi (Japan); and Tsuguo Fukuda, Miyagi (Japan)
Assigned to Stella Chemifa Corporation, Osaka (Japan); and Tohoku Techno Arch Co., Ltd., Sendai-Shi (Japan)
Appl. No. 11/578,248
PCT Filed Apr. 12, 2005, PCT No. PCT/JP2005/007068
§ 371(c)(1), (2), (4) Date Mar. 06, 2007,
PCT Pub. No. WO2005/100645, PCT Pub. Date Oct. 27, 2005.
Claims priority of application No. 2004-117131 (JP), filed on Apr. 12, 2004; and application No. 2004-245269 (JP), filed on Aug. 25, 2004.
Prior Publication US 2007/0272898 A1, Nov. 29, 2007
Int. Cl. G01T 1/20 (2006.01)
U.S. Cl. 250—361R 27 Claims
OG exemplary drawing
 
1. A rare earth fluoride solid solution single crystal wherein said rare earth fluoride solid solution single crystal is represented by MxREyRE′1−x−yFz,
where RE is one or two or more selected from the group consisting of Ce, Pr, Nd, Eu, Tb, Ho, Er, Tm, and Yb,
RE′ is one or two or more selected from the group consisting of La, Sm, Gd, Dy, Lu, Y, and Sc,
M is one or more of Mg, Ca, Sr, and Ba,
0.0000<y<1.0000,
1.5000≤z≤3.5000, and
0.0000<x<0.1500.