Crystallization behavior and magnetic properties of melt-spun (Pr,Tb)2(Fe,Nb)14B/α-Fe nanocomposites

Jin, Z.Q.; Okumura, Hideyuki; Wang, H.L.; Muñoz, J.S.; Papaefthymiou, V.; Hadjipanayis, G. C.

doi:10.1016/s0304-8853(01)01273-2

Cited by 13 publications

(10 citation statements)

References 7 publications

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“…In order to obtain amorphous Nd 8 Fe 84 Ti 2 B 6 matrix, ribbons at a series of wheel velocities (14,16,18,20,22, and 24 m/s) were prepared. The XRD peak profiles indicate that amorphous phase is formed at a velocity higher than 20 m/s.…”

Section: Resultsmentioning

confidence: 99%

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Study on Magnetic Behavior of Nd8Fe84Ti2B6 Nanocomposite by FORC Diagram

Jin

Liu

et al. 2015

Mat. Res.

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Section: Resultsmentioning

confidence: 99%

“…Figure 2 displays 18 . Both nucleation rate and grain growth rate increase exponentially with increasing annealing temperature, so there is a optimum annealing temperature to maximize the nucleariotion rate and refinement of the grains.…”

Section: Resultsmentioning

confidence: 99%

Study on Magnetic Behavior of Nd8Fe84Ti2B6 Nanocomposite by FORC Diagram

Jin

Liu

et al. 2015

Mat. Res.

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“…coupled R 2 Fe 14 B/(␣-Fe or Fe 3 B) (R ϭPr,Nd) nanocomposites offer great promise as high performance magnets due to their high remanences. [1][2][3][4][5][6][7] It is noted that the magnetic behavior of these nanocomposites is closely related to grain size and nanostructured morphology. These nanocomposites can be prepared either by meltspinning off-stoichiometric alloys at optimum speed or by subjecting amorphous alloys to a controlled crystallization annealing treatment.…”

Section: Exchangementioning

confidence: 99%

“…Therefore, grain growth inhibitors have been introduced to modify nucleation kinetics and prevent grain growth. [5][6][7] However, most nonmagnetic additives dilute magnetization. Another consideration is to increase heating rate in attempts to avoid the formation of undesired phases during the crystallization.…”

Section: Exchangementioning

confidence: 99%

Controlling the crystallization and magnetic properties of melt-spun Pr2Fe14B/α-Fe nanocomposites by Joule heating

Jin

Cui

Liu

et al. 2004

Applied Physics Letters

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Pr 2 Fe 14 B/␣-Fe based nanocomposites have been prepared through crystallization of melt-spun amorphous Pr 7 Tb 1 Fe 85 Nb 0.5 Zr 0.5 B 6 ribbons by means of ac Joule heating while simultaneously monitoring room-temperature electrical resistance R. The R value shows a strong variation with respect to applied current I, and is closely related to the amorphous-to-nanocrystalline phase transformation. The curve of R versus I allows one to control the crystallization behavior during Joule heating and to identify the heat-treatment conditions for optimum magnetic properties. A coercivity of 550 kA/m and a maximum energy product of 128 kJ/m 3 have been obtained upon heating the amorphous ribbons at a current of 2.0 A. These properties are around 30% higher than the values of samples prepared by conventionally ͑furnace͒ annealed amorphous ribbons.

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“…Normally, the latter one is used. Thus, the crystallization process has attracted considerable attention because it determines the final microstructures and magnetic properties [11][12].…”

Section: Introductionmentioning

confidence: 99%

Crystallization behaviour and high coercivity of (Nd,Pr)13Fe80Nb1B6 melt-spun ribbons

et al. 2009

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Amorphous (Nd,Pr) 13 Fe 80 Nb 1 B 6 ribbons were crystallized at 670-730°C for 5-25 min to study the effects of isothermal crystallization on their behavior and magnetic properties. XRD results indicate that the isothermal incubation time is 12, 5, and less than 5 min at 670, 700, and 730°C, respectively. High coercivities, with the maximum value of i H c = 1616 kA/m at 700°C for 19 min, measured by a physical property measurement system, are obtained in the crystallized ribbons. This is mainly attributed to the addition of Pr and Nb, because Pr 2 Fe 14 B has a higher anisotropic field than Nd 2 Fe 14 B, and Nb enriched in the grain boundary regions can not only reduce the exchange-coupling effects among hard grains, but also impede grain growth during the crystallization process. In addition, it should also be related to the characteristics of the furnace that the authors designed.

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Crystallization behavior and magnetic properties of melt-spun (Pr,Tb)2(Fe,Nb)14B/α-Fe nanocomposites

Cited by 13 publications

References 7 publications

Study on Magnetic Behavior of Nd8Fe84Ti2B6 Nanocomposite by FORC Diagram

Study on Magnetic Behavior of Nd8Fe84Ti2B6 Nanocomposite by FORC Diagram

Controlling the crystallization and magnetic properties of melt-spun Pr2Fe14B/α-Fe nanocomposites by Joule heating

Crystallization behaviour and high coercivity of (Nd,Pr)13Fe80Nb1B6 melt-spun ribbons

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