Structure and magnetic properties of iron nanoparticles synthesized by chemical vapor condensation

2004; Wiley; Volume: 201; Issue: 8 Linguagem: Inglês

10.1002/pssa.200304563

ISSN

1521-396X

Autores

D. H. Lee, T.S. Jang, D. W. Lee, B. K. Kim,

Tópico(s)

Metallic Glasses and Amorphous Alloys

Resumo

physica status solidi (a)Volume 201, Issue 8 p. 1930-1933 Original Paper Structure and magnetic properties of iron nanoparticles synthesized by chemical vapor condensation D. H. Lee, D. H. Lee Division of Materials and Chemical Engineering, Sunmoon University, 100 Kalsan Li, Tangjung Myon, Asan, Choongnam 336-708, KoreaSearch for more papers by this authorT. S. Jang, Corresponding Author T. S. Jang [email protected] Division of Materials and Chemical Engineering, Sunmoon University, 100 Kalsan Li, Tangjung Myon, Asan, Choongnam 336-708, KoreaPhone: +82 41 530 2341, Fax: +82 41 544 1857Search for more papers by this authorD. W. Lee, D. W. Lee Nanopowder Materials Group, Korea Institute of Machinery and Materials, 66 Sangnam Dong, Changwon, Kyungnam 641-010, KoreaSearch for more papers by this authorB. K. Kim, B. K. Kim Nanopowder Materials Group, Korea Institute of Machinery and Materials, 66 Sangnam Dong, Changwon, Kyungnam 641-010, KoreaSearch for more papers by this author D. H. Lee, D. H. Lee Division of Materials and Chemical Engineering, Sunmoon University, 100 Kalsan Li, Tangjung Myon, Asan, Choongnam 336-708, KoreaSearch for more papers by this authorT. S. Jang, Corresponding Author T. S. Jang [email protected] Division of Materials and Chemical Engineering, Sunmoon University, 100 Kalsan Li, Tangjung Myon, Asan, Choongnam 336-708, KoreaPhone: +82 41 530 2341, Fax: +82 41 544 1857Search for more papers by this authorD. W. Lee, D. W. Lee Nanopowder Materials Group, Korea Institute of Machinery and Materials, 66 Sangnam Dong, Changwon, Kyungnam 641-010, KoreaSearch for more papers by this authorB. K. Kim, B. K. Kim Nanopowder Materials Group, Korea Institute of Machinery and Materials, 66 Sangnam Dong, Changwon, Kyungnam 641-010, KoreaSearch for more papers by this author First published: 11 May 2004 https://doi.org/10.1002/pssa.200304563Citations: 8AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Iron nanoparticles were synthesized by chemical vapor condensation (CVC) without the aid of LN2 chiller. The powder synthesized at 400 °C was a mixture of amorphous and crystalline α-Fe. Fully crystallized iron particles were then obtained at and above 600 °C. When the reactor temperature was 1000 °C, however, nonmagnetic γ-Fe was stabilized together with α-Fe. The synthesized particles, mostly possessing the core-shell type structure, were all nearly spherical, but the average particle size rapidly increased as the temperature increased. The surface layer that enclosed the iron core and became thicker in smaller particles was Fe3O4 or Fe3O4-related amorphous. Except for the one synthesized at 1000 °C, the iron nanoparticles were not fully saturated. The iron nanoparticles (∼20 nm) synthesized at 600 °C exhibited iHc ∼ 1.0 kOe and Ms ∼ 170 emu/g. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) References [1] R. W. Seigel, Mater. Sci. Eng. B 19, 37 (1993). 10.1016/0921-5107(93)90162-G Web of Science®Google Scholar [2] G. C. Hadjipanayis and G. A. Prinz (eds), Science and Technology of Nanostructured Magnetic Materials (Plenum, New York, 1991), p. 497. Google Scholar [3] H. S. Nalwa (ed), Nanostructured Materials and Nanotechnology (Academic Press, San Diego, 2002), chap. 1. Google Scholar [4] C. J. Choi, O. Tolochko, and B. K. Kim, Mater. Lett. 56, 289 (2002). 10.1016/S0167-577X(02)00457-3 CASWeb of Science®Google Scholar [5] X. L. Dong, C. J. Choi, and B. K. Kim, Scr. Mater. 47, 857 (2002). 10.1016/S1359-6462(02)00304-4 CASWeb of Science®Google Scholar [6] G. M. Chow and N. I. Noskova (eds), Nanostructured Materials – Science & Technology (Kluwer Academic, Dordrecht, 1998), chap. 5. Google Scholar [7] W. Chang, G. Skandan, S. C. Danforth, and B. Kear, Nanostruct. Mater. 4, 507 (1994). 10.1016/0965-9773(94)90058-2 CASGoogle Scholar [8] Y. Sawada, Y. Kageyama, M. Iwata, and A. Tasaki, Jpn. J. Appl. Phys. 31, 3858 (1992). 10.1143/JJAP.31.3858 CASWeb of Science®Google Scholar [9] P. Schrwaechter, M. Wimmer, R. Würschum, D. Plachke, H. D. Carstanjen, and H.-E. Schaefer, Nanostruct. Mater. 11, 37 (1999). 10.1016/S0965-9773(98)00159-7 Web of Science®Google Scholar Citing Literature Volume201, Issue8June 2004Pages 1930-1933 ReferencesRelatedInformation

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