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Thermoelectric Properties of Crystallized Vanadate Glasses Prepared by Using Microwave Irradiation

Published online by Cambridge University Press:  29 May 2012

Takuya Aoyagi ,
Tadashi Fujieda ,
Yuichi Sawai ,
Motoyuki Miyata ,
Takashi Naito  and
Hiroki Yamamoto
Takuya Aoyagi
Affiliation:
Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken 319-1292, Japan
Tadashi Fujieda
Affiliation:
Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken 319-1292, Japan
Yuichi Sawai
Affiliation:
Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken 319-1292, Japan
Motoyuki Miyata
Affiliation:
Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken 319-1292, Japan
Takashi Naito
Affiliation:
Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken 319-1292, Japan
Hiroki Yamamoto
Affiliation:
Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken 319-1292, Japan
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Abstract

This study examined the crystallization of vanadate glasses by using microwave irradiation. A second aim was comparing the thermoelectric properties of crystallized glasses when using microwave irradiation to conventional heating. V2O5-P2O5-Fe2O3-CuO glasses were prepared by using the melt quenching method. These glasses were irradiated by 2.45-GHz microwaves and heated in an electric furnace. MxV2O5 (M= Cu, Fe x=0.26-055) crystals were selectively precipitated by using the microwave irradiation. The crystal growth was also promoted by it. As a result, precipitation crystals formed a fiber-like structure. The electrical conductivity of the microwave irradiated glass was 6.3×101S/m at room temperature, which was three times higher than the value of conventionally-heated glass. The Seebeck coefficient of the microwave irradiated glass was -127 μV/K at room temperature, which was two times higher than that of conventionally-heated glass. This caused the power factor to be improved about 12 times. These results show that microwave irradiation is a potential candidate for obtaining conductive crystallized vanadate glasses.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1454: Symposium HH – Nanocomposites, Nanostructures and Heterostructures of Correlated Oxide Systems , 2012 , pp. 15 - 20
Copyright
Copyright © Materials Research Society 2012

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References

REFERENCES

Sutton, W. H., Am. Ceram. Soc. Bull. 68(2), 376 (1989).Google Scholar
Mingos, D. M. P. and Baghurst, D. R., Chem. Soc. Rev. 20, 1 (1991).CrossRefGoogle Scholar
Deng, S. G. and Lin, Y. S., J. Mater. Sci. Lett. 16, 1291 (1997).CrossRefGoogle Scholar
Roy, R., Agrawal, D., Cheng, J., and Gedevanishvili, S., Nature. 399, 668 (1999).CrossRefGoogle Scholar
Rao, K. J., Ramakrishnan, P. A., and Gadagkar, R., J. Solid State Chem. 148, 100 (1999).CrossRefGoogle Scholar
Clark, D. E., Folz, D. C., and West, J. K., Mater. Sci. Eng. A. 287 (2), 153 (2000).CrossRefGoogle Scholar
Mahmoud, M. M., Folz, D. C., Suchicital, C. T. A., and Clark, D. E., J. Am. Ceram. Soc. 95 (2), 579 (2012).CrossRefGoogle Scholar
Roy, R., Peelamedu, R., Grimes, C., Cheng, J., and Agrawal, D., J. Mater. Res. 17 (12), 3008 (2002).CrossRefGoogle Scholar
Denton, E. P., Rawson, H., and Stanworth, J. E., Nature. 173, 1030 (1954).CrossRefGoogle Scholar
Linsley, G. S., Owen, A. E., and Hayatee, F. M., J. Non-Crystalline Solids. 4, 208 (1970).CrossRefGoogle Scholar
Taguchi, M., Okamoto, K., Baba, N., Kuga, M., Oguro, T., and Ogura, T., J. Mater. Res. 17 (12), 3008 (2002).Google Scholar
Tsuchiya, T. and Mizumoto, K., J. Ceram. Soc. Japan, 97 (10), 1138 (1989).CrossRefGoogle Scholar
Palanna, O.G., Mohan, A.L. S., and Biswas, A.B., Proc. Indian Acad. Sci, 87A (8), 259 (1978).Google Scholar
Yamada, H. and Ueda, Y., J. Phys. Soc. Japan, 69 (5), 1437 (2000).CrossRefGoogle Scholar
Livage, J., Chem. Mater. 3, 578 (1991).CrossRefGoogle Scholar
Iwanaga, S., Marciniak, M., Darling, R. B., and Ohuchi, F.S., J. Appl. Phys, 101, 123709 (2007).CrossRefGoogle Scholar
Allersma, T. and Mackenzie, J.D., J. Chem. Phys, 47(4), 1406 (1967).CrossRefGoogle Scholar