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| Title: | Study of structural and magnetic properties of iron-rich mixed rare-Earth NdDyFe (17-y-x)CoxSiy compounds | |
| Author (s): | Kamaraju, K. Yang, J.B. Yelon, William B. Pringle, O. Allan Kim, M. James, William Joseph Cai, Q. | |
| Department/Lab Affiliations: | Chemistry Physics | |
| Keywords: | 305 to 405 degC Curie temperature Curie temperatures DH DR Disordered hexagonal NdDyFe(17-y-x)CoxSiy Rietveld program cobalt alloys disordered hexagonal structure disordered rhombohedral structure disordered rhomboherdral dysprosium alloys ferromagnetic materials high-purity elements induction melting iron iron alloys magnetic annealing magnetic ordering transition temperature magnetic properties magnetization neodymium alloys permanent magnets rare-Earth materials silicon alloys solid solutions structural study | |
| Issue Date: | 2004 | |
| Publisher: | Institute of Electrical and Electronics Engineers | |
| Citation: | Kamaraju, K.; Yang, J.B.; Yelon, W.B.; Pringle, O.A.; Kim, M.; James, W.J.; Cai, Q. "Study of structural and magnetic properties of iron-rich mixed rare-Earth NdDyFe(17-y-x)CoxSiy compounds" IEEE Transactions on Magnetics, Vol.40, Iss.4, July 2004 Pages: 2910- 2912 | |
| Abstract: | A series of NdDyFe(17-y-x)CoxSiy solid solutions with = 2 and 3 and = 0.5 1.0 and 1.5 were prepared by induction melting stoichiometric amounts of high-purity elements. The postannealed samples consist of two phases belonging to the space groups R3 m and P63 mmc . The lattice parameters and the unit cell volumes were calculated from the refinements of the magnetic and structural unit cells using the FULLPROF version of the Rietveld program. For a fixed content of Co, the maximum Curie temperatures (305 C to 405 C) were observed in samples with = 1 and having two phases, a disordered rhombohedral (DR) structure and a disordered hexagonal (DH) structure. An increase in the Curie temperature of 70 C per atom of cobalt is observed in NdDyFe(17-y-x)CoxSiy with y = 1 and x< 3, suggesting that with a suitable choice of rare earths this DR phase may be a promising candidate for high-energy product permanent magnets. The magnetization versus temperature (M versus T) plots of the solid solutions, which consist of two phases, exhibit only a single magnetic ordering transition temperature. | |
| Type: | Article - Journal text | |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. FULL COPYRIGHT INFORMATION: | |
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| title | Study of structural and magnetic properties of iron-rich mixed rare-Earth NdDyFe (17-y-x)CoxSiy compounds | |
| contributor.author | Kamaraju, K. | |
| contributor.author | Yang, J.B. | |
| contributor.author | Yelon, William B. | |
| contributor.author | Pringle, O. Allan | |
| contributor.author | Kim, M. | |
| contributor.author | James, William Joseph | |
| contributor.author | Cai, Q. | |
| contributor.deptlab | Chemistry | |
| contributor.deptlab | Electronic Materials Applied Research Center | |
| contributor.deptlab | Physics | |
| subject | 305 to 405 degC | |
| subject | Curie temperature | |
| subject | Curie temperatures | |
| subject | DH | |
| subject | DR | |
| subject | Disordered hexagonal | |
| subject | NdDyFe(17-y-x)CoxSiy | |
| subject | Rietveld program | |
| subject | cobalt alloys | |
| subject | disordered hexagonal structure | |
| subject | disordered rhombohedral structure | |
| subject | disordered rhomboherdral | |
| subject | dysprosium alloys | |
| subject | ferromagnetic materials | |
| subject | high-purity elements | |
| subject | induction melting | |
| subject | iron | |
| subject | iron alloys | |
| subject | magnetic annealing | |
| subject | magnetic ordering transition temperature | |
| subject | magnetic properties | |
| subject | magnetization | |
| subject | neodymium alloys | |
| subject | permanent magnets | |
| subject | rare-Earth materials | |
| subject | silicon alloys | |
| subject | solid solutions | |
| subject | structural study | |
| date.issued | 2004 | |
| date.submitted | 2007 | |
| publisher | Institute of Electrical and Electronics Engineers | |
| identifier.citation | Kamaraju, K.; Yang, J.B.; Yelon, W.B.; Pringle, O.A.; Kim, M.; James, W.J.; Cai, Q. "Study of structural and magnetic properties of iron-rich mixed rare-Earth NdDyFe(17-y-x)CoxSiy compounds" IEEE Transactions on Magnetics, Vol.40, Iss.4, July 2004 Pages: 2910- 2912 | |
| identifier.issn | 0018-9464 | |
| identifier.pub.URI | ||
| description.abstract | A series of NdDyFe(17-y-x)CoxSiy solid solutions with = 2 and 3 and = 0.5 1.0 and 1.5 were prepared by induction melting stoichiometric amounts of high-purity elements. The postannealed samples consist of two phases belonging to the space groups R3 m and P63 mmc . The lattice parameters and the unit cell volumes were calculated from the refinements of the magnetic and structural unit cells using the FULLPROF version of the Rietveld program. For a fixed content of Co, the maximum Curie temperatures (305 C to 405 C) were observed in samples with = 1 and having two phases, a disordered rhombohedral (DR) structure and a disordered hexagonal (DH) structure. An increase in the Curie temperature of 70 C per atom of cobalt is observed in NdDyFe(17-y-x)CoxSiy with y = 1 and x< 3, suggesting that with a suitable choice of rare earths this DR phase may be a promising candidate for high-energy product permanent magnets. The magnetization versus temperature (M versus T) plots of the solid solutions, which consist of two phases, exhibit only a single magnetic ordering transition temperature. | |
| type | Article - Journal | |
| type.DCMIType | text | |
| type.status | Final version | |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. | |
| rights.URI | ||
| date.accessioned | 2007-04-05T14:20:20Z | |
| date.available | 2007-04-05T14:20:20Z | |
| identifier.persist.URI | ||
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