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ETDEWEB   /       /    Annealing Effects on the Magnetization of Co-Ni-B Amorphous Nanoparticles; Propiedades Magneticas de Nanoparticulas Monodominio de la Familia (Co{sub x}Ni {sub 1-x}){sub 70}B{sub 30}

Annealing Effects on the Magnetization of Co-Ni-B Amorphous Nanoparticles; Propiedades Magneticas de Nanoparticulas Monodominio de la Familia (Co{sub x}Ni {sub 1-x}){sub 70}B{sub 30}

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Abstract

Chemically prepared (Co{sub x}Ni {sub 1-x}){sub 1}00{sub -y}B{sub y} (x=0.5, 0.75, 1; y{approx}30) amorphous fine particles were characterized by x-ray diffraction, DTA and TGA, and in-situ magnetic measurement as a function of annealing temperature in an inert atmosphere.Magnetic measurement performed in as prepared and {approx}150C degree annealed samples show an increase of the saturation magnetization and magnetic moment after thermal tretment.Room temperature magnetization increases by factors of {approx}3 in average.These measurements may indicate a local re-ordering of the amorphous phase at temperatures much lower than the full crystallization temperature.
Authors:
Vargas, J M [1] 
  1. Instituto Balseiro, Universidad Nacional de Cuyo, Centro Atomico Bariloche (Argentina)
Publication Date:
Jul 01, 2001
Product Type:
Thesis/Dissertation
Report Number:
INIS-AR-V-064
Resource Relation:
Other Information: TH: Thesis (Ms.D); 21 refs; PBD: 2001
Subject:
36 MATERIALS SCIENCE; AMORPHOUS STATE; BORON ALLOYS; CHEMICAL PREPARATION; FERROMAGNETIC MATERIALS; HEAT TREATMENTS; MAGNETIC MATERIALS; MAGNETISM; MAGNETIZATION; RECRYSTALLIZATION; SUPERPARAMAGNETISM
OSTI ID:
20243535
Research Organizations:
Comision Nacional de Energia Atomica, San Carlos de Bariloche (Argentina). Dto. Investigacion Basica
Country of Origin:
Argentina
Language:
Spanish
Other Identifying Numbers:
TRN: AR02V0064016299
Availability:
Available from INIS in electronic form
Submitting Site:
INIS
Size:
104 pages
Announcement Date:
Apr 30, 2002

Thesis/Dissertation:

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Citation Formats

Vargas, J M. Annealing Effects on the Magnetization of Co-Ni-B Amorphous Nanoparticles; Propiedades Magneticas de Nanoparticulas Monodominio de la Familia (Co{sub x}Ni {sub 1-x}){sub 70}B{sub 30}. Argentina: N. p., 2001. Web.
Vargas, J M. Annealing Effects on the Magnetization of Co-Ni-B Amorphous Nanoparticles; Propiedades Magneticas de Nanoparticulas Monodominio de la Familia (Co{sub x}Ni {sub 1-x}){sub 70}B{sub 30}. Argentina.
Vargas, J M. 2001. "Annealing Effects on the Magnetization of Co-Ni-B Amorphous Nanoparticles; Propiedades Magneticas de Nanoparticulas Monodominio de la Familia (Co{sub x}Ni {sub 1-x}){sub 70}B{sub 30}." Argentina.
@misc{etde_20243535,
title = {Annealing Effects on the Magnetization of Co-Ni-B Amorphous Nanoparticles; Propiedades Magneticas de Nanoparticulas Monodominio de la Familia (Co{sub x}Ni {sub 1-x}){sub 70}B{sub 30}}
 author = {Vargas, J M}
 abstractNote = {Chemically prepared (Co{sub x}Ni {sub 1-x}){sub 1}00{sub -y}B{sub y} (x=0.5, 0.75, 1; y{approx}30) amorphous fine particles were characterized by x-ray diffraction, DTA and TGA, and in-situ magnetic measurement as a function of annealing temperature in an inert atmosphere.Magnetic measurement performed in as prepared and {approx}150C degree annealed samples show an increase of the saturation magnetization and magnetic moment after thermal tretment.Room temperature magnetization increases by factors of {approx}3 in average.These measurements may indicate a local re-ordering of the amorphous phase at temperatures much lower than the full crystallization temperature.}
 place = {Argentina}
 year = {2001}
 month = {Jul}
 }