TITLE

Correlations between low-field microwave absorption and magnetoimpedance in Co-based amorphous ribbons

AUTHOR(S)
Montiel, H.; Alvarez, G.; Betancourt, I.; Zamorano, R.; Valenzuela, R.
PUB. DATE
February 2005
SOURCE
Applied Physics Letters;2/14/2005, Vol. 86 Issue 7, p072503
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Microwave power absorption measurements at 9.4 GHz were carried out on as-cast amorphous ribbons of nominal composition Co66Fe4B12Si13Nb4Cu. Two absorptions were observed: a small signal at a low dc field (<0.01 T) and another one at a high dc field (∼0.1682 T). The high-field signal shows all the features corresponding to ferromagnetic resonance. The low-field absorption (LFA) signal exhibits different characteristics such as hysteresis and a minimum in power absorption at zero magnetic field. A correlation between this LFA signal and magnetoimpedance measurements showed that both electromagnetic processes are associated with the same phenomenon.
ACCESSION #
16581297

 

Related Articles

  • Laser synthesis and magnetism of amorphous iron and cobalt carbide nanoparticles with carbon onion. Huh, Seung H.; Nakajima, Atsushi // Journal of Applied Physics;3/15/2006, Vol. 99 Issue 6, p064302 

    Amorphous iron or cobalt carbide nanoparticles with a carbon onion structure were produced using a pulsed laser ablation of metallocene powders at room temperature. While they are ferromagnetic at room temperature, they exhibit a drastic change in magnetic spin moments at 20–30 K. These...

  • Width of the ferromagnetic resonance line in highly dispersed powders of crystalline and amorphous Co�P alloys. Iskhakov, R. S.; Chekanova, L. A.; Denisova, E. A. // Physics of the Solid State;Mar99, Vol. 41 Issue 3, p416 

    The resonance characteristics (inhomogeneous FMR linewidth ?H) in highly dispersed (d=0.1�3 �m) powders of crystalline and amorphous Co�P alloys are investigated as a function of the composition, particle size, and atomic structure. It is established that ?H for powders of...

  • Magnetic viscosity, thermal relaxation, and thermal equilibrium noise in Co-based amorphous alloys at milliKelvin temperatures. Vitale, S.; Tommasini, R.; Cerdonio, M.; Bonaldi, M.; Cavalleri, A.; Durin, G. // Journal of Applied Physics;11/15/1992, Vol. 72 Issue 10, p4820 

    Deals with a study which determined the measurements of the magnetic reversible complex permeability and the related thermal noise for a few cobalt-based soft ferromagnetic amorphous alloys. Information on the use of ferromagnetic cores in low-level signal circuits; Methodology of the study;...

  • Macroscopic dynamic effects in an amorphous ferromagnet. Yan, Li; Bhagat, S. M.; Mazumdar, P.; Moorjani, K.; Kistenmacher, T. J. // Journal of Applied Physics;4/15/1985, Vol. 57 Issue 8, p3730 

    Provides information on a study that described magnetization and ferromagnetic resonance measurements on melt-spun amorphous ferromagnet ribbons. Methodology of the study; Results and discussion of the study.

  • Experimental determination of inter-sublattice exchange constants in amorphous FeGd alloys. Kita, Eiji; Hata, Yoshiaki; Yano, Kazuo; Suzuki, Hiroyuki; Kido, Giyu // Journal of Applied Physics;6/1/2004, Vol. 95 Issue 11, p6834 

    High-field-magnetization measurements were assessed for melt-spun amorphous Fe100-xGdx alloys. Samples with X=22 and 24 clearly revealed ferrimagnetic spin-flip transition around 100–150 kOe at 4.2 K and their magnetizations linearly increased with increasing magnetic field above the...

  • Longitudinal resonance in ferromagnets with random anisotropy: A formal experimental demonstration. Suran, G.; Boumaiz, E. // Journal of Applied Physics;4/16/1997, Vol. 81 Issue 8, p4060 

    Reports on several properties of a new resonance mode detected in Co93-xZr7(RE)x (RE=Pr, Nd, Dy and Tb) amorphous thin films possessing an in-plane uniaxial anisotropy Hk. Longitudinal resonance of the new mode; Localization of the mode.

  • Experimental observation of the longitudinal resonance mode in ferromagnets with random anisotropy. Suran, G.; Boumaiz, E.; Youssef, J. Ben // Journal of Applied Physics;4/15/1996, Vol. 79 Issue 8, p5381 

    Reports on the experimental observation of the longitudinal resonance mode in ferromagnets with a wandering axis. Analysis of the magnetic properties of an amorphous solid; Definition of the ferromagnetic resonance phenomenon in crystalline compounds; Properties of amorphous compounds.

  • Evidence of Weak Ferromagnetism in Pb(FeW)O Powders by Means of Non-resonant Microwave Absorption. Alvarez, G.; Montiel, H.; Conde-Gallardo, A.; Zamorano, R. // Journal of Superconductivity & Novel Magnetism;May2014, Vol. 27 Issue 5, p1329 

    We report on the effects of temperature and dc magnetic field on non-resonant microwave absorption measurements at X-band (8.8-9.8 GHz) in Pb(FeW)O powders, for the 294-425 K temperature range. Two techniques are used: the magnetically modulated microwave absorption spectroscopy (MAMMAS) and the...

  • Tunable ferromagnetic resonance in NiFe nanowires with strong magnetostatic interaction. Xiaoming Kou; Xin Fan; Hao Zhu; Xiao, John Q. // Applied Physics Letters;3/16/2009, Vol. 94 Issue 11, p112509 

    Magnetic materials with tunable ferromagnetic resonant (FMR) frequencies are highly desirable in microwave devices. In this manuscript, we demonstrate that the natural FMR of Ni90Fe10 nanowire array can be tuned continuously from 8.2 to 11.7 GHz by choosing different remanent states. Theoretical...

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