CIVILICA We Respect the Science
Publisher of Iranian Journals and Conference Proceedings
Paper
title

Effect of Heat-Treatment on the GMI Effect and Domain Structure of Amorphous and Nanocrystalline Soft Magnetic Fe72Si12.5B9Nb3Cu1Al1.5Ge1 Alloy

Credit to Download: 0 | Page Numbers 3 | Abstract Views: 808
Year: 2008
Present: شفاهي
COI code: ICNN02_024
Paper Language: English

How to Download This Paper

For Downloading the Fulltext of CIVILICA papers please visit the orginal Persian Section of website.

Authors Effect of Heat-Treatment on the GMI Effect and Domain Structure of Amorphous and Nanocrystalline Soft Magnetic Fe72Si12.5B9Nb3Cu1Al1.5Ge1 Alloy

  S Mirzaei - Department of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST
A Beitollahi -
S. G. Shabestari -
  F Shahri - Department of Metallurgy and Materials Engineering, Iran University of Industries and mines, Tahran

Abstract:

Amorphous and nanocrystalline alloys have attracted considerable attention due to their often unique magnetic, electronic, mechanical, chemical, optical and other properties [1]. Among different nanocrystalline alloys, Fe–Cu–Nb–Si–B alloys (i.e. Finemet) have attracted much interest because of their excellent soft magnetic properties. This alloy is derived from the conventional Fe–Si–B system with minor additions of copper (Cu) and niobium (Nb)[2]. In this case, Cu acts as a nucleating agent and enhances the nucleation of the bcc grains whereas Nb inhibits the grain growth of the FeSi phase that crystallizes from the amorphous matrix during annealing [2,3]. It has been found that the crystallization of Fe–Si–B amorphous alloys containing Nb and Cu causes the formation of nanoscale BCC structure and the BCC alloys exhibit good soft magnetic properties of 1.2/1.4T for saturation magnetic fluxdensity (Bs) and high effective permeability (μe)[4]. One of the very important features observed in this nanocrystalline compound is the so-called magnetoimpedance (MI) effect making them as an excellent candidate for technological applications such as magnetic devices or sensors based on MI effect. This phenomenon is a strong dependence of the electrical impedance Z (f, H), of a ferromagnetic conductor on an external static magnetic field H, when a high-frequency alternating current flows through it[5]. The percentage change of the magnetoimpedance (i.e., the GMI ratio) with applied magnetic field has been expressed as : (1)Where Z(H) is the impedance of the sample at zero DC magnetic field, Hmax is the maximum applied DC magnetic field[5,6]. Various works have reported the effects of heat-treatment conditions [7] and different substitutions [8,9] on the magnetic properties of FINEMET alloys. In the work presented here, we report the effect of annealing time on the GMI effect and domain structure of the as-spun and heat-treated Fe72Si12.5B9Nb3Cu1Al1.5Ge1 ribbons

Keywords:

Perma Link

https://www.civilica.com/Paper-ICNN02-ICNN02_024.html
COI code: ICNN02_024

how to cite to this paper:

If you want to refer to this article in your research, you can easily use the following in the resources and references section:
Mirzaei, S; A Beitollahi; S. G. Shabestari & F Shahri, 2008, Effect of Heat-Treatment on the GMI Effect and Domain Structure of Amorphous and Nanocrystalline Soft Magnetic Fe72Si12.5B9Nb3Cu1Al1.5Ge1 Alloy, 2nd International Congress on Nanoscience and Nanotechnology (ICNN2008), تبريز, دانشگاه تبريز, https://www.civilica.com/Paper-ICNN02-ICNN02_024.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Mirzaei, S; A Beitollahi; S. G. Shabestari & F Shahri, 2008)
Second and more: (Mirzaei; Beitollahi; Shabestari & Shahri, 2008)
For a complete overview of how to citation please review the following CIVILICA Guide (Citation)

Scientometrics

The University/Research Center Information:
Type: state university
Paper No.: 20504
in University Ranking and Scientometrics the Iranian universities and research centers are evaluated based on scientific papers.

Research Info Management

Export Citation info of this paper to research management softwares

New Related Papers

Iran Scientific Advertisment Netword

Share this paper

WHAT IS COI?

COI is a national code dedicated to all Iranian Conference and Journal Papers. the COI of each paper can be verified online.