TITLE

Random anisotropy and domain-wall pinning process in the magnetic properties of rapidly quenched Nd[sub 60]Fe[sub 30]Al[sub 10]

AUTHOR(S)
Bracchi, A.; Samwer, K.; Schneider, S.; Löffler, J. F.
PUB. DATE
February 2003
SOURCE
Applied Physics Letters;2/3/2003, Vol. 82 Issue 5, p721
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The magnetic properties and microstructure of glassy Nd[sub 60]Fe[sub 30]Al[sub 10] splat-quenched samples have been investigated by small-angle neutron scattering, Mössbauer spectroscopy, and vibrating sample magnetometry. The presence of chemical inhomogeneities in the amorphous sample is evidenced by small-angle neutron scattering which indicates a complex network of atom clusters with an average diameter of 15 nm. These results are confirmed by the magnetization measurements which show the coexistence of two magnetic phases with different ordering temperatures and indicate phases separation in rapidly quenched Nd[sub 60]Fe[sub 30]Al[sub 10] samples. Magnetic neutron scattering analysis reveals magnetic correlation volumes in the ferromagnetic phase of about 34 nm in diameter. Random anisotropy and a domain-wall pinning process within the two phases are discussed to explain the magnetic properties of amorphous Nd[sub 60]Fe[sub 30]Al[sub 10].
ACCESSION #
8989296

 

Related Articles

  • Cross-tie walls and magnetic singularities on the surface of permalloy films (abstract). Lee, Y.; Kueny, A. // Journal of Applied Physics;4/16/1997, Vol. 81 Issue 8, p3852 

    Investigates the surface magnetic microstructure of thin polycrystalline permalloy films. Use of scanning electron microscopy with polarization analysis; Observation of cross-tie walls with a periodic vortex structure; Reversal of magnetization across the straight edges of the wall; Elliptical...

  • Effective anisotropy field distribution of soft magnetic nanocrystalline Fe84Zr3.5Nb3.5B8Cu1 ribbons. Modak, S. S.; Mazaleyrat, F.; Bue, M. Lo; Varga, L. K.; Kane, S. N. // AIP Conference Proceedings;6/5/2012, Vol. 1447 Issue 1, p1163 

    In soft magnetic amorphous and nanocrystalline alloys where anisotropy varies randomly over a length scale determined by the micro structure, there exist a distribution of anisotropies. It is possible to determine such distribution of random anisotropies from the magnetization curve. Anisotropy...

  • The origin of the large perpendicular magnetic anisotropy in Co...Pt alloy thin films. Yamada, Y.; Suzuki, T. // Journal of Applied Physics;4/15/1999 Part 2A of 2, Vol. 85 Issue 8, p5094 

    Presents information on a study which discussed the origin of the large perpendicular magnetic anisotropy obtained in cobalt-platinum alloy thin films. Experimental details; Results and discussion; Conclusions.

  • Structure and magnetic properties of RCo[sub 7-x]Zr[sub x] (R=Y, Gd, Nd, or Ho, x=0–0.8). Huang, M. Q.; Sankar, S. G.; Wallace, W. E.; McHenry, M. E.; Chen, Q.; Ma, B. M. // Journal of Applied Physics;5/1/2000, Vol. 87 Issue 9, p5305 

    Alloys with the composition RCo[sub 7-x]Zr[sub x] (R=Y, Gd, Nd, or Ho, x=0–0.8) were synthesized and characterized in the temperature range from 10 to 1273 K and in fields up to 5 T. As with the R=Sm, Pr, or Er systems studied earlier in our laboratory, the effects of Zr doping on the...

  • Improvement of coercivity and thermal stability of anisotropic Nd13Fe79.4B7Nb0.3Ga0.3 powders by diffusion of Pr-Cu alloys. Lin, Zhong; Han, Jingzhi; Xing, Meiying; Liu, Shunquan; Wu, Rui; Wang, Changsheng; Zhang, Yan; Yang, Yingchang; Yang, Jinbo // Applied Physics Letters;1/30/2012, Vol. 100 Issue 5, p052409 

    Highly anisotropic Nd13Fe79.4B7Nb0.3Ga0.3 powders from a self-organized rod-like disproportionation microstructure and room temperature magnetic properties of μ0Mr = 1.4 T, iHc = 13 kOe, and (BH)max = 41 MGOe are obtained by optimizing hydrogenation disproportionation desorption recombination...

  • Microstructure and magnetic properties of multilayered [Fe/Pt]n structures prepared by successive deposition. Kamzin, A. S.; Wei, Fulin; Ganeev, V. R.; Valiullin, A. A.; Zaripova, L. D. // Physics of the Solid State;Sep2013, Vol. 55 Issue 9, p1855 

    The structure and magnetic properties of multilayered [Fe/Pt] n structures prepared by successive magnetron sputtering of Fe and Pt plates and deposition of Fe and Pt layers on a preliminarily heated glass substrate have been studied as functions of the number n and thickness of the layers....

  • Magnetic properties and crystal structure of melt-spun Sm(Co, M)7 (M = Al and Si) ribbons. Hsieh, C. C.; Shih, C. W.; Liu, Z.; Chang, W. C.; Chang, H. W.; Sun, A. C.; Shaw, C. C. // Journal of Applied Physics;Apr2012, Vol. 111 Issue 7, p07E306 

    Effect of Si and Al contents on the magnetic properties and crystal structure of melt-spun SmCo7-xMx (M = Al and Si) ribbons have been investigated. The Rietveld refinement results show that Al and Si prefer to occupy the 3g site in the TbCu7-type structure. The changes in both the...

  • Double transition behavior induced by coherent anisotropy in random anisotropy magnets amorphous... Saito, T.; Mochiduki, K. // Journal of Applied Physics;4/15/1999 Part 2A of 2, Vol. 85 Issue 8, p4509 

    Studies the magnetic phase transition in weak random anisotropy magnets amorphous holmium-iron and erbium-iron thin films. Experimental details; Results and discussion.

  • Structure and magnetic properties of anisotropic Sm[sub 2]Fe[sub 17]N[sub x] powders. Ding, J.; McCormick, P.G.; Street, R. // Applied Physics Letters;11/30/1992, Vol. 61 Issue 22, p2721 

    Investigates the magnetic properties of anisotropic Sm[sub 2]Fe[sub 17]N[sub x] powders. Application of mechanical milling and nitriding; Effect of milling on crystal alignment; Alignment of the nitrided samples in a magnetic field; Influence of milling time, ball size, and heat treatment on...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics