Structure and magnetic properties of bulk nanocrystalline Dy metal prepared by spark plasma sintering

Yue, M.; Wang, K. J.; Liu, W. Q.; Zhang, D. T.; Zhang, J. X.
November 2008
Applied Physics Letters;11/17/2008, Vol. 93 Issue 20, p202501
Academic Journal
The structure and magnetic properties were studied for bulk nanocrystalline dysprosium (Dy) metal prepared by spark plasma sintering method. All the as-prepared samples have hexagonal close packed structure. A decrease in grain size results in remarkable changes in magnetic ordering temperature of the nanocrystalline Dy metal. At 5 K, the magnetization drops by 3.35%, and the coercive force increases by three times for nanocrystalline Dy compared to those of coarse-grained bulk Dy sample. These results indicate the remarkable influence of the nanostructure on the magnetism of Dy due to finite size effect.


Related Articles

  • Magnetization Processes of (La 0.7Pb 0.3MnO 3) 1−x(SiO 2) x Composites. Young, S. L.; Wu, T. C.; Horng, L.; Lin, C. H.; Chen, H. Z.; Kao, M. C.; Ou, C. R.; Shih, N. F.; Shi, J. B. // Journal of Superconductivity & Novel Magnetism;Aug2010, Vol. 23 Issue 6, p953 

    The ceramic composites, (La0.7Pb0.3MnO3)1− x(SiO2) x, with diluted magnetic properties are prepared using solid-sate sintering route. Magnetization processes of (La0.7Pb0.3MnO3)1− x(SiO2) x composites are explored in this study. Ferromagnetism is gradually attenuated due to the...

  • Electrochemical corrosion behavior, microstructure and magnetic properties of sintered Nd-Fe-B permanent magnet doped by CuZn5 powders. Liu, W. Q.; Wang, Z.; Sun, C.; Yue, M.; Liu, Y. Q.; Zhang, D. T.; Zhang, J. X. // Journal of Applied Physics;2014, Vol. 115 Issue 17, p17A716-1 

    Nd-Fe-B permanent magnets with a small amount of CuZn5 powders doping were prepared by conventional sintered method. The effects of CuZn5 contents on magnetic properties and microstructure, electrochemical corrosion resistance of sintered Nd-Fe-B magnets were systematically studied. The results...

  • Magnetic properties of Co-Zr-B magnets produced by spark plasma sintering method. Tetsuji Saito; Tomoya Akiyama // Journal of Applied Physics;2014, Vol. 115 Issue 17, p17A749-1 

    Magnets of Co-Zr-B, one of the permanent magnetic compounds without rare-earth elements, were successfully produced by the spark plasma sintering method. The resultant Co-Zr-B magnets had high densities of 92%-96% and consisted mainly of the CoxZr (x ≈ 5) phase. The coercivity of the...

  • Sintered magnetic cores of high Bs Fe84.3Si4B8P3Cu0.7 nano-crystalline alloy with a lamellar microstructure. Yan Zhang; Sharma, Parmanand; Akihiro Makino // Journal of Applied Physics;2014, Vol. 115 Issue 17, p17A322-1 

    Fabrication of bulk cores of nano-crystalline Fe84.3Si4B8P3Cu0.7 alloy with a lamellar type of microstructure is reported. Amorphous ribbon flakes of size ∼1.0-2.0mm were compacted in the bulk form by spark plasma sintering technique at different sintering temperatures. High density...

  • Influence of Radiation-Thermal Treatment on the Phase Composition and Structural Parameters of the SHS Product Based on W-Type Hexaferrite. Naiden, E.; Minin, R.; Itin, V.; Zhuravlev, V. // Russian Physics Journal;Nov2013, Vol. 56 Issue 6, p674 

    The phase composition, structural parameters, and main magnetic characteristics of BaCoZnFeO hexaferrites obtained by the method of self-propagation high-temperature synthesis in combination with mechanochemical activation and radiation-thermal post-sintering are investigated. It is established...

  • Generalized permeability of a type II superconductor. Ignatjev, V. K. // Low Temperature Physics;Dec2005, Vol. 31 Issue 12, p1027 

    A generalized electric displacement is constructed for a superconductor in the mixed state by averaging the microscopic fields over a system of Abrikosov vortices moving with a velocity varying in time and space, with the vortex and transport currents of the superconducting component and the...

  • Electromagnetic induction by ferrofluid in an oscillating heat pipe. Monroe, J. G.; Vasquez, E. S.; Aspin, Z. S.; Walters, K. B.; Berg, M. J.; Thompson, S. M. // Applied Physics Letters;7/1/2015, Vol. 106 Issue 26, p1 

    Thermal-to-electrical energy conversion was demonstrated using an oscillating heat pipe (OHP) filled with ferrofluid and equipped with an annular-type solenoid. The OHP was subjected to a 100 °C axial temperature difference allowing the ferrofluid to passively oscillate through the solenoid,...

  • Stability of magnets levitated above superconductors. Davis, L. C.; Logothetis, E. M.; Soltis, R. E. // Journal of Applied Physics;10/15/1988, Vol. 64 Issue 8, p4212 

    Presents information on a study which suggested that stability is provided in part by the irreversibility of the induction of supercurrents. Magnetic levitation experiment; Discussion of the dipole above a perfectly dimagnetic disk; Application of the critical-state model of Bean to the...

  • Mn magnetism and magnetic structures in RMn2. Ballou, R.; Deportes, J.; Lemaire, R.; Ouladdiaf, B. // Journal of Applied Physics;4/15/1988, Vol. 63 Issue 8, p3487 

    Presents a study that examined the effects of the magnetic frustration, associated with the instability of the manganese (Mn) magnetism for different RMn[sub2] compounds. Use of the induction technique to melt the samples; Cause of the frustration of the magnetic structures of RMn[sub2];...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics