In this paper, the progress on improving physical properties of functional materials by laser irradiation is reported and discussed. Sintered with a CO2 laser, a novel Ta2O5-based ceramics with maximum κ of 450 can be obtained at ambient conditions. The electrical conductivity of PCDF induced by excimer laser irradiation was found to increase from 10−13 Ω−1·cm−1 to 10−4 Ω−1·cm−1. Significant improvement in the magneto transport properties of La0.67Ca0.33MnO3 thin film irradiated by CO2 laser in air can be obtained. Irradiated with a CO2 laser, the polarization and piezoelectric constants d15 of Ba0.5Sr1.5Na0.6K0.4Nb5O15 ceramic was found to increase to 120 pC/N. Based upon the characterization of the samples, the phase, micro-structure, and the mechanism of property modification in laser irradiated samples were analyzed.

1.
Huang
Y. Z.
,
Ji
L. F.
,
Jiang
Y. J.
 (
2006
),
Design of crossed double strip integrators for high power laser beam homogenizing
,
Chinese Journal of Laser. A
33
(
Suppl
),
264
–
267
.
Google Scholar
 
2.
Huang
Y. Z.
,
Ji
L. F.
,
Xie
Q. M.
, et al (
2007
),
A set of high power CO2 laser homogenizing system for laser ceramics sintering
,
Chinese Journal of Laser. A
34
(
Suppl
),
330
–
333
.
Google Scholar
 
3.
Ji
L. F.
,
Jiang
Y. F.
 (
2007
).
Investigations of dielectric enhancement in (Ta2O5)1-x(TiO2)x ceramics prepared by laser-sintering technique
,
Appl. Phys. A
87
(
4
),
733
–
738
.
https://doi.org/10.1007/s00339-007-3889-9
Google Scholar
Crossref
Search ADS
 
4.
Ji
L. F.
,
Jiang
Y. F.
,
Wei
Wang
, et al (
2004
)
Enhancement of the dielectric permittivity of Ta2O5 ceramics by CO2 laser irradiation
,
Appl. Phys. Lett.
85
,
1577
–
1579
.
https://doi.org/10.1063/1.1784539
Google Scholar
Crossref
Search ADS
 
5.
Ji
L. F.
,
Jiang
Y. F.
 (
2006
).
Dielectric and microstructure modification of Ta2O5 ceramics by laser sintering
,
Mater. Lett.
60
,
86
–
89
.
https://doi.org/10.1016/j.matlet.2005.07.077
Google Scholar
Crossref
Search ADS
 
6.
Ji
L. F.
,
Jiang
Y. F.
 (
2006
).
Laser sintering of transparent Ta2O5 dielectric ceramics
,
Mater. Lett.
60
,
1502
–
1504
.
https://doi.org/10.1016/j.matlet.2005.11.060
Google Scholar
Crossref
Search ADS
 
7.
Chang
L.
,
Jiang
Y. J.
,
Ji
L. F.
(
2007
).
Improvement of the electrical and ferromagnetic properties in La0.67Ca0.33MnO3 thin film irradiated by CO2 laser
,
Appl. Phys. Lett.
90
,
082505
.
https://doi.org/10.1063/1.2679147
Google Scholar
Crossref
Search ADS
 
8.
Chang
L.
,
Jiang
Y. J.
,
Ji
L. F.
(
2007
).
Effect of CO2 laser irradiation on the transport properties of La0.67Ba0.33MnO3 thin film
,
Solid State Commun.
141
,
582
–
586
.
https://doi.org/10.1016/j.ssc.2006.11.036
Google Scholar
Crossref
Search ADS
 
9.
Cava
R. F.
,
Peck
W. F.
, Jr., and
Krajiewski
,
J. J.
 (
1995
).
Enhancement of the dielectric constant of Ta2O5 through substitution with TiO2
,
Nature
377
,
215
–
217
.
https://doi.org/10.1038/377215a0
Google Scholar
Crossref
Search ADS
 
10.
Ji
Y. L.
,
Jiang
Y. J.
 (
2006
).
Increasing the electrical conductivity of Poly(vinylidene fluoride) by KrF excimer laser irradiation
,
Appl. Phys. Lett.
89
,
221103
.
https://doi.org/10.1063/1.2390632
Google Scholar
Crossref
Search ADS
 
11.
Tuinstra
F.
,
Koenig
J. L.
 (
1970
),
Raman spectrum of graphite
.
Chem Phys.
,
53
(
3
),
1126
–
1130
.
Google Scholar
 
12.
Jiang
Y. J.
,
Guo
,
R. Y.
,
Bhalla
A. S.
 (
1998
),
Single Crystal Growth and Ferroelectric Properties of α(Ba1-xSrx)Nb2O6:β(Na1-yKy)NbO3 Solid Solutions Family
,
J. Appl. Phys.
84
,
5140
–
5145
.
https://doi.org/10.1063/1.368808
Google Scholar
Crossref
Search ADS
 
13.
Fu
Z. Y.
,
Ji
L. F.
,
Jiang
Y. J.
 (
2007
),
Laser sintering of Ba(Ti0.95Zr0.05)O3 piezoelectric ceramics
,
Chinese Journal of Laser. A
34
(
Suppl
),
125
–
127
.
Google Scholar
 
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