مرکز منطقه ای اطلاع رساني علوم و فناوري - Influence of Ga addition on structure, thermal and magnetic properties of CoFeBSiNb metallic glasses

DocumentCode :

3047312

Title :

Influence of Ga addition on structure, thermal and magnetic properties of CoFeBSiNb metallic glasses

Author :

Hosko, J. ; Janotova, I. ; Svec, Peter ; Matko, Igor ; Janickovic, D. ; Svec, Peter

Author_Institution :

Inst. of Phys., Bratislava, Slovakia

fYear :

2012

fDate :

11-15 Nov. 2012

Firstpage :

295

Lastpage :

298

Abstract :

Rapidly quenched Co-Fe-B-Si-Nb-(Ga) ribbons were investigated. We have concentrated on the influence of small addition of gallium (2 at.%) into base composition Co₄₇Fe_20.9B_21.2Si_4.6Nb_6.3 on structure, thermal and magnetic properties in as-cast state and upon transition to nanocrystalline state. Structure of the samples was examined by X-ray diffraction (XRD), transmission electron microscopy (TEM) and high resolution electron microscopy (HREM). Thermal stability associated with glass transition temperature (T_g), crystallization temperature (T_x) and supercooled liquid region (ΔT_x=T_x-T_g) were examined by differential scanning calorimetry (DSC). The Curie temperature of the investigated ribbons was determined by magnetic thermogravimetry analysis (TGA).

Keywords :

Curie temperature; X-ray diffraction; boron alloys; casting; cobalt alloys; crystallisation; differential scanning calorimetry; gallium alloys; glass structure; glass transition; iron alloys; metallic glasses; nanomagnetics; nanoribbons; niobium alloys; rapid solidification; silicon alloys; supercooling; thermal stability; transmission electron microscopy; CoFeBSiNbGa; Curie temperature; DSC; TEM; TGA; X-ray diffraction; XRD; as-cast state; crystallization temperature; differential scanning calorimetry; gallium addition; glass transition temperature; high resolution electron microscopy; magnetic properties; magnetic thermogravimetry analysis; metallic glasses; nanocrystalline state transition; rapidly quenched ribbons; structural properties; supercooled liquid region; thermal properties; thermal stability; transmission electron microscopy; Annealing; Gallium; Magnetic properties; Plasma temperature; Thermal stability; X-ray scattering;

fLanguage :

English

Publisher :

ieee

Conference_Titel :

Advanced Semiconductor Devices & Microsystems (ASDAM), 2012 Ninth International Conference on

Conference_Location :

Smolenice

Print_ISBN :

978-1-4673-1197-7

Type :

conf

DOI :

10.1109/ASDAM.2012.6418539

Filename :

6418539

Link To Document :

https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=3047312