Scintillation, radioluminescence, photoluminescence, and thermoluminescence characteristics of Czochralski-grown YbxY1−xAlO3 single crystals for x=0.02–0.45 are described. Under x-ray excitation, the intensity of Yb3+ charge-transfer luminescence is increasing with x and reaches at room temperature more than 11% of Bi4Ge3O12 (BGO) for x=0.45, while at 80 K it is over 170% of BGO for x⩾0.3. At room temperature, scintillation decay shows a dominant decay time of 0.8–0.9 ns for x⩾0.3 and no significant slow components were detected. The photoluminescence decay time is tuned by temperature and Yb concentration from tens of nanoseconds at 80 K down to about 0.8 ns at 295 K. Thermoluminescence glow curve below room temperature evidences very low concentration of shallow traps compared to the Ce-doped YAlO3 scintillator.

1.
L.
van Pieterson
,
M.
Heeroma
,
E.
de Heer
, and
A.
Meijerink
,
J. Lumin.
91
,
177
(
2000
).
2.
N.
Guerassimova
,
N.
Garnier
,
C.
Dujardin
,
A. G.
Petrosyan
, and
C.
Pedrini
,
Chem. Phys. Lett.
339
,
197
(
2001
).
3.
P.
Antonini
,
G.
Bressi
,
G.
Carugno
, and
D.
Iannuzzi
,
Nucl. Instrum. Methods Phys. Res. A
460
,
467
(
2001
).
4.
R. S.
Raghavan
,
Phys. Rev. Lett.
78
,
3618
(
1997
).
5.
E.
Nakazawa
,
J. Lumin.
18–19
,
272
(
1979
).
6.
E.
Nakazawa
,
Chem. Phys. Lett.
56
,
161
(
1978
).
7.
P.
Yang
,
P.
Deng
, and
Z.
Yin
,
J. Lumin.
97
,
51
(
2002
).
8.
I. A.
Kamenskikh
,
N.
Guerassimova
,
C.
Dujardin
,
N.
Garnier
,
G.
Ledoux
,
C.
Pedrini
,
M.
Kirm
,
A.
Petrosyan
, and
D.
Spassky
,
Opt. Mater. (Amsterdam, Neth.)
24
,
267
(
2003
).
9.
J. B.
Shim
,
A.
Yoshikawa
,
M.
Nikl
,
N.
Solovieva
,
J.
Pejchal
,
D. H.
Yoon
, and
T.
Fukuda
,
J. Cryst. Growth
256
,
298
(
2003
).
10.
J. B. Shim et al. (unpublished).
11.
V. G.
Baryshevski
,
M. V.
Korzhik
,
B. I.
Minkov
,
S. A.
Smirnova
,
A. A.
Fyodorov
,
P.
Dorenbos
, and
C. W. E.
van Eijk
,
J. Phys.: Condens. Matter
5
,
7893
(
1993
).
12.
M.
Nikl
,
K.
Nitsch
,
K.
Polak
,
E.
Mihokova
,
I.
Dafinei
,
E.
Auffray
,
P.
Lecoq
,
P.
Reiche
, and
R.
Uecker
,
Phys. Status Solidi B
195
,
311
(
1996
).
13.
M.
Nikl
,
J. A.
Mares
,
J.
Chval
,
E.
Mihokova
,
N.
Solovieva
,
M.
Martini
,
A.
Vedda
,
K.
Blazek
,
P.
Maly
,
K.
Nejezchleb
,
P.
Fabeni
,
G. P.
Pazzi
,
V.
Babin
,
K.
Kalder
,
A.
Krasnikov
,
S.
Zazubovich
, and
C.
D’Ambrosio
,
Nucl. Instrum. Methods Phys. Res. A
486
,
250
(
2002
).
14.
P. A. Rodnyi, Physical processes in inorganic scintillators (CRC, New York, 1994).
15.
M.
Nikl
,
P.
Bohácek
,
E.
Mihóková
,
J.
Rosa
,
M.
Martini
,
A.
Vedda
,
P.
Fabeni
,
G. P.
Pazzi
,
V.
Laguta
,
M.
Kobayashi
,
M.
Ishii
,
Y.
Usuki
,
D.
Zimmerman
,
S.
Baccaro
, and
A.
Cecilia
,
Radiat. Meas.
33
,
705
(
2001
).
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