Claims
- 1. A radiation detector comprising a housing, a window in said housing which is transparent to the radiation to be detected and a radiation detecting element of pyroelectric ceramic material on the basis of lead titanate, wherein the composition of the ceramic material corresponds to the formula
- Pb.sub.1-(x+0.5(x-y) RE.sub.x Ti.sub.1-y Mn.sub.y O.sub.3,
- where RE is at least one rare earth metal and 0.04.ltoreq.x.ltoreq.0.20 and 0.01.ltoreq.y.ltoreq.0.04.
- 2. The radiation detector as claimed in claim 1, wherein at least one of La, Sm and Gd is used as the rare earth metal.
- 3. The radiation detector as claimed in claim 1 wherein y=0.02.
- 4. The radiation detector as claimed in claim 1 wherein the composition corresponds to the formula
- Pb.sub.1-(x+0.5(x-0.02)) La.sub.x Ti.sub.0.98 Mn.sub.0.02 O.sub.3,
- where 0.04.ltoreq.x.ltoreq.0.08.
- 5. The radiation detector as claimed in claim 1 wherein the composition thereof corresponds to the formula
- Pb.sub.1-(x+0.5(x-0.02)) Sm.sub.x Ti.sub.0.98 Mn.sub.0.02 O.sub.3,
- where 0.08.ltoreq.x.ltoreq.0.15.
- 6. The radiation detector as claimed in claim 1 wherein the composition corresponds to the formula
- Pb.sub.0.86 Gd.sub.0.10 Ti.sub.0.98 Mn.sub.0.02 O.sub.3.
Priority Claims (1)
Number |
Date |
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Kind |
41 15 949.7 |
May 1991 |
DEX |
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Parent Case Info
This is a continuation of application Ser. No. 07/882,330, filed May 13, 1992, now abandoned.
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JPX |
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GBX |
Non-Patent Literature Citations (3)
Entry |
American Soc. Bulletin Nr. 4, Apr. 1987 "Anisotropy in Piezoelectric Properties of Modified Lead Titanate Ceramics" pp. 699-703 D. Damjanovic et al. |
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Journal of Materials Science Letters, Aug. 1991 "Effect of MnO Additions on the Sintering and Piezoelectric Properties of Samarium-Modified Lead Titanate Ceramics" Duran et al. pp. 917-919. |
Continuations (1)
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Number |
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Parent |
882330 |
May 1992 |
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