TY - GEN
T1 - Nanostructuring and texturing for improved magnetic materials
AU - Sellmyer, David J.
AU - Liu, Y.
AU - George, T. A.
N1 - Funding Information:
Financial support. This work was supported by the Swiss National Science Foundation (SNF; grant number BSSGI0-155851). H. F. G. was supported by SNF grant 179571. Furthermore, this study has been financed within the framework of the Swiss HIV Cohort Study, supported by the Swiss National Science Foundation (grant number 177499), the SHCS research foundation, the Yvonne Jacob Foundation (to H. F. G.), and the clinical research priority program of the University of Zurich "viral infectious diseases, Zurich Primary HIV Infection Cohort Study" (to H. F. G.). H. F. G. has received an unrestricted research grant from Gilead to the SHCS Research Foundation. Acknowledgments. The authors thank the patients who have participated in the Swiss HIV Cohort Study (SHCS); the physicians and study nurses for excellent patient care; the resistance laboratories for high-quality genotyping drug resistance testing; SmartGene (Zug, Switzerland) for technical support; Alexandra Scherrer, Susanne Wild, and Anna Traytel, from the SHCS data center, for data management; and Dani?le Perraudin and Marianne Amstad for administration. The current members of the Swiss HIV Cohort Study are Anagnostopoulos A., Battegay M., Bernasconi E., B?ni J., Braun D. L., Bucher H. C., Calmy A., Cavassini M., Ciuffi A., Dollenmaier G., Egger M., Elzi L., Fehr J., Fellay J., Furrer H. (Chairman of the Clinical and Laboratory Committee), Fux C. A., G?nthard H. F. (President of the SHCS), Haerry D. (deputy of "Positive Council"), Hasse B., Hirsch H. H., Hoffmann M., H?sli I., Huber M., Kahlert C., Kaiser L., Keiser O., Klimkait T., Kouyos R. D., Kovari H., Ledergerber B., Martinetti G., Martinez de Tejada B., Marzolini C., Metzner K. J., M?ller N., Nicca D., Paioni P., Pantaleo G., Perreau M., Rauch A. (Chairman of the Scientific Board), Rudin C. (Chairman of the Mother and Child Substudy), Scherrer A. U. (Head of Data Center), Schmid P., Speck R., St?ckle M., Tarr P., Trkola A., Vernazza P., Wandeler G., Weber R., Yerly S.
PY - 2012
Y1 - 2012
N2 - The concept of achieving a useful high-energy-product magnet through appropriate nanostructuring of known hard and soft phases has been tantalizing researchers since the idea was first proposed. The fabrication of exchange-coupled nanocomposite magnets faces several challenges including aligning the easy anisotropy axes of the hard-phase grains. Here we investigate experimentally two-phase nanostructures of hard L1 0-ordered FePt and soft iron-rich fcc Fe(Pt). The Fe-Pt thin films were produced by epitaxial co-sputtering onto MgO (001) single-crystal substrates which lead to strong (001) texturing. The measured hysteresis loops indicate nearly ideal exchange coupling. Excellent magnetic properties are obtained, with largest values of coercivity (51 kOe), saturation magnetization (1287 emu/ cm 3, J s = 16.2 kG), and nominal maximum energy product (58 MGOe).
AB - The concept of achieving a useful high-energy-product magnet through appropriate nanostructuring of known hard and soft phases has been tantalizing researchers since the idea was first proposed. The fabrication of exchange-coupled nanocomposite magnets faces several challenges including aligning the easy anisotropy axes of the hard-phase grains. Here we investigate experimentally two-phase nanostructures of hard L1 0-ordered FePt and soft iron-rich fcc Fe(Pt). The Fe-Pt thin films were produced by epitaxial co-sputtering onto MgO (001) single-crystal substrates which lead to strong (001) texturing. The measured hysteresis loops indicate nearly ideal exchange coupling. Excellent magnetic properties are obtained, with largest values of coercivity (51 kOe), saturation magnetization (1287 emu/ cm 3, J s = 16.2 kG), and nominal maximum energy product (58 MGOe).
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M3 - Conference contribution
AN - SCOPUS:84860790747
SN - 9781118291382
T3 - TMS Annual Meeting
SP - 393
EP - 401
BT - Energy Technology 2012
T2 - Energy Technology 2012: Carbon Dioxide Management and Other Technologies - TMS 2012 Annual Meeting and Exhibition
Y2 - 11 March 2012 through 15 March 2012
ER -