REAl

3

(BO

3

)

4

was well known as good laser materials

but its fluorescent nano-powders have not been well studied.A series of fluorescent nano-powders Gd

1-x

Eu

x

Al

3

(BO

3

)

4

has been synthesized by solid reactions.Raw materials Al

2

O

3

H

3

BO

3

Gd

2

O

3

Eu

2

O

3

were well mixed and baked at 400℃/2h first

then 750℃/4 h

and 1150℃/8h the last.After being well grinded the fluorescent powders of Gd

1-x

Eu

x

Al

3

(BO

3

)

4

has been synthesized.The samples were characterized by XRD

and the microcrystal diameter of the samples were calculated to be within 100 nanometer by XRD diagram.Their luminescent properties of the fluorescent powders were measured by the RF540 fluorescence spectrometer(Japan)with “suspending powder method” with glycerin as the dispersing medium.The samples of GdAl

3

(BO

3

)

4

gave the emission spectrum at 310 nm when excited by the light of 280 nm

and the spectrum of dispersing medium glycerin did not disturb the spectrum of GdAl

3

(BO

3

)

4

.The samples of Gd

1-x

Eu

x

Al

3

(BO

3

)

4

almost had the same emission spectrum of Eu

3+

no matter they were excited by 390 nm or by 280 nm.The strongest emission of Eu

3+

was

5

D

0

→

7

F

2

transition.So there was no symmetry position in the crystal structure of Gd

1-x

Eu

x

Al

3

(BO

3

)

4

by the rule of fluorescent probe.The emission spectrum of

5

D

0

→

7

F

2

was higher excited by 280 nm than that excited by 390 nm.It was the evidence of the energy transfer between Gd

3+

-Eu

3+

.The experiment results show that fluorescent powders with nanometer microcrystals of Gd

1-x

Eu

x

Al

3

(BO

3

)

4

can be synthesized by solid reactions.GdAl

3

(BO

3

)

4

:Eu

3+

gives 618 nm emission spectrum as the transition

5

D

0

→

7

F

2

and there was no symmetry position in the crystal structure of Gd

1-x

Eu

x

Al

3

(BO

3

)

4

.The experiment results show that there was energy transfer between Gd

3+

-Eu

3+

.Because of its fine properties of fluorescence and its stability of material

the fluorescent nano-powders of Gd

1-x

Eu

x

Al

3

(BO

3

)

4

may possess great value for being further studied and used.