Structure and some magnetic properties of mechanically synthesized and thermally treated Co–Fe–Ni alloys

Pikula, T.; Oleszak, D.; Pękała, M.; Jartych, E.

doi:10.1016/j.jmmm.2007.06.020

Cited by 51 publications

(28 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additional heat treatment * corresponding author; e-mail: t.pikula@pollub.pl of the mechanically synthesized alloys may cause structural changes, i.e. an increase in the grain size accompanied by a decrease in the level of internal strains or the change of the crystalline lattice type [7][8][9]. The aim of this work was: (1) to synthesize Co 40 Fe 50 Ni 10 and Co 50 Fe 45 Ni 5 alloys by MA technology and (2) to characterize the structure, hyperfine interactions and macroscopic magnetic properties of the alloys after MA process as well as after heat treatment.…”

Section: Introductionmentioning

confidence: 99%

Hyperfine Interactions and Some Magnetic Properties of Nanocrystalline Co₄₀Fe₅₀Ni₁₀and Co₅₀Fe₄₅Ni₅Alloys Prepared by Mechanical Synthesis and Subsequently Heat Treated

2011

View full text Add to dashboard Cite

Co40Fe50Ni10 and Co50Fe45Ni5 ternary alloys were prepared by mechanical alloying method. To check the stability of their structure thermal treatment was applied subsequently. As X-ray diffraction studies proved the final products of milling were the solid solutions with bcc lattice and the average grain sizes ranged of tens of nanometers. After heating of the Co50Fe45Ni5 alloy up to 993 K the mixture of two solid solutions with bcc and fcc lattices was formed. In other cases thermal treatment did not change the type of the crystalline lattice. Mössbauer spectroscopy revealed hyperfine magnetic field distributions which reflected the different possible atomic surroundings of 57 Fe isotopes. Results of the macroscopic magnetic measurements proved that both investigated alloys had relatively good soft magnetic properties.

show abstract

Section: Introductionmentioning

confidence: 99%

Hyperfine Interactions and Some Magnetic Properties of Nanocrystalline Co₄₀Fe₅₀Ni₁₀and Co₅₀Fe₄₅Ni₅Alloys Prepared by Mechanical Synthesis and Subsequently Heat Treated

2011

View full text Add to dashboard Cite

show abstract

“…Moreover, the macroscopic magnetic properties of the alloys were determined from the magnetic measurements. In our previous studies we have proved that MA is a method providing Co-Fe-Ni alloys, which are in the nonequilibrium state [7]. Thermal treatment of the mechanosynthesized alloys have caused the structural changes, i.e.…”

Section: Introductionmentioning

confidence: 96%

“…Thermal treatment of the mechanosynthesized alloys have caused the structural changes, i.e. an increase in the grain size accompanied with a decrease in the level of internal strains, the change of the type of the crystalline lattice or the decomposition of the alloy into the mixture of two solid solutions with bcc and fcc lattice, respectively [7]. The aim of this work was to estimate the contributions of the suitable solid solutions in the decomposed alloys on the basis of the hyperfine magnetic field distributions.…”

Section: Introductionmentioning

confidence: 99%

Mössbauer Study of Mechanosynthesized and Thermally Treated Co-Fe-Ni Alloys

et al. 2008

View full text Add to dashboard Cite

Mechanical alloying was used to prepare Co40Fe60, Co60Fe35Ni5, Co 40 Fe 45 Ni 15 , and Co 40 Fe 35 Ni 25 alloys from the elemental powders. As X-ray diffraction studies proved the final products of milling were the solid solutions with bcc or fcc lattice and the average grain size between 20 and 50 nm. After heating of the alloys up to 993 K, the mixtures of two solid solutions with bcc and fcc lattices were formed in the case of Co-Fe-Ni alloys. Thermal treatment did not influence the type of the lattice of Co 40 Fe 60 alloy. The Mössbauer spectroscopy revealed hyperfine magnetic field distribution ranged from 33 to 38 T for Co 40 Fe 60 alloy and from 30 to 37 T for Co-FeNi alloys. In the case of two-phase alloys, distributions were decomposed into two simple Gaussian functions using the numerical fitting. Magnetic measurements allowed to determine the effective magnetic moments and the Curie temperatures of the obtained alloys.

show abstract

“…This work follows our systematic investigations [5][6] of the mechanically synthesized Co x Fe y Ni z alloys in the context of their structure and hyperfine interactions. Products of milling reach saturation magnetization of the order of 2T and coercive field about 15-67Oe [6], therefore MA may represent potential technology of production of soft magnetic powders.…”

Section: Introductionmentioning

confidence: 99%

“…Products of milling reach saturation magnetization of the order of 2T and coercive field about 15-67Oe [6], therefore MA may represent potential technology of production of soft magnetic powders. After milling the obtained structures of alloys are often in the non-equilibrium state.…”

Section: Introductionmentioning

confidence: 99%

Hyperfine interactions in mechanosynthesized and thermally treated Co-Fe-Ni alloys

Pikula

Oleszak

Jartych

2010

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Abstract. A series of Co-rich Co x Fe y Ni z alloys was successfully produced using the mechanical alloying method. To check the stability of their structure thermal treatment was applied subsequently. Mössbauer spectroscopy and X-ray diffraction were used to investigate some structural and micro-magnetic properties of mechanosynthesized as well as thermally treated alloys. X-ray diffraction measurements proved that during mechanical alloying solid solutions with b.c.c. or f.c.c. lattices were formed, while thermal processing in some cases provided to decomposition into the mixture of b.c.c. and f.c.c. phases. Mössbauer spectra were fitted using hyperfine magnetic field distribution method. The average value of hyperfine magnetic field induction ranged from 31.5 to 35.5 T. In the case of some thermally treated samples, shapes of distributions reflect two-phase character of the alloys. For this reason curves of distribution were numerically fitted using two Gaussian functions, which were attributed to the suitable phases. The area of individual components was calculated.

show abstract

Structure and some magnetic properties of mechanically synthesized and thermally treated Co–Fe–Ni alloys

Cited by 51 publications

References 18 publications

Hyperfine Interactions and Some Magnetic Properties of Nanocrystalline Co₄₀Fe₅₀Ni₁₀and Co₅₀Fe₄₅Ni₅Alloys Prepared by Mechanical Synthesis and Subsequently Heat Treated

Hyperfine Interactions and Some Magnetic Properties of Nanocrystalline Co₄₀Fe₅₀Ni₁₀and Co₅₀Fe₄₅Ni₅Alloys Prepared by Mechanical Synthesis and Subsequently Heat Treated

Mössbauer Study of Mechanosynthesized and Thermally Treated Co-Fe-Ni Alloys

Hyperfine interactions in mechanosynthesized and thermally treated Co-Fe-Ni alloys

Contact Info

Product

Resources

About

Structure and some magnetic properties of mechanically synthesized and thermally treated Co–Fe–Ni alloys

Cited by 51 publications

References 18 publications

Hyperfine Interactions and Some Magnetic Properties of Nanocrystalline Co40Fe50Ni10and Co50Fe45Ni5Alloys Prepared by Mechanical Synthesis and Subsequently Heat Treated

Hyperfine Interactions and Some Magnetic Properties of Nanocrystalline Co40Fe50Ni10and Co50Fe45Ni5Alloys Prepared by Mechanical Synthesis and Subsequently Heat Treated

Mössbauer Study of Mechanosynthesized and Thermally Treated Co-Fe-Ni Alloys

Hyperfine interactions in mechanosynthesized and thermally treated Co-Fe-Ni alloys

Contact Info

Product

Resources

About

Hyperfine Interactions and Some Magnetic Properties of Nanocrystalline Co₄₀Fe₅₀Ni₁₀and Co₅₀Fe₄₅Ni₅Alloys Prepared by Mechanical Synthesis and Subsequently Heat Treated

Hyperfine Interactions and Some Magnetic Properties of Nanocrystalline Co₄₀Fe₅₀Ni₁₀and Co₅₀Fe₄₅Ni₅Alloys Prepared by Mechanical Synthesis and Subsequently Heat Treated