Curie temperature enhancement of Nd2Fe14B in nanocomposite exchange-spring alloys

Lewis, L. H.; Welch, D.O.; Panchanathan, V.

doi:10.1016/s0304-8853(97)00362-4

Cited by 26 publications

(12 citation statements)

References 14 publications

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“…14 This indicates an interaction between the ␣-Fe and the 2-14-1 lattices which may be due to epitaxial strain as well as differences in thermal expansion and magnetostriction. 3 After annealing for 120 min at 1173 K, the ͑006͒ peaks of 2-14-1 appear to have become decoupled from the ͑110͒ of ␣-Fe. The data presented in Figs.…”

Section: Resultsmentioning

confidence: 98%

“…The magnetic properties of thin films and nanocomposite materials can vary significantly from bulk alloys. [1][2][3] The Curie temperature T c may be reduced or enhanced by chemical alloying or under application of compressive stress. 4 -6 An enhancement of T c has been observed in melt-spun ribbons with Nd 2 Fe 14 B residing in an ␣-Fe matrix.…”

Section: Introductionmentioning

confidence: 99%

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Processing induced changes in Curie temperature of Nd2Fe14B melt-spun ribbons

Yang

Dennis

et al. 2003

Journal of Applied Physics

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Articles you may be interested inEffect of magnetic fields on melt-spun Nd2Fe14B-based ribbons J. Appl. Phys. 111, 07A731 (2012); 10.1063/1.3679161 In-situ investigation of phase formation in nanocrystalline (Co97.5Fe2.5)89Zr7B4 alloy by high temperature x-ray diffraction J. Appl. Phys. 111, 07A316 (2012); 10.1063/1.3673433 Effect of Zr substitution for rare earth on microstructure and magnetic properties of melt-spun ( Nd 0.75 Pr 0.25 ) 12.5−x Zr x Fe 82 B 5.5 (x=0-3) ribbons

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Section: Resultsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Processing induced changes in Curie temperature of Nd2Fe14B melt-spun ribbons

Yang

Dennis

et al. 2003

Journal of Applied Physics

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“…Lewis L.H. et.al [49], and also in [50] [51]. An increase in the Curie temperature was due to the penetration of the exchange field of the phase with a higher Curie temperature into the neighboring phase with a lower Curie temperature [52,53].…”

Section: Nanocomposite Magnetsmentioning

confidence: 99%

Nanocrystalline Hard Magnetic Materials

Алымов¹,

Milyaev²,

Yusupov³

et al. 2017

AMT

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The first part of the review covers the results of studies of nanocrystalline single-phase hard magnetic materials, mainly on the basis of compounds of rare earth metals produced by super-fast melt quenching with its subsequent crystallization, mechanical alloying and other rapid solidification techniques such as vapor deposition, etc. Specific features of microstructure, magnetic properties, and mechanisms of magnetic hardening of such alloys are considered. The discussion of magnetic properties of nanocomposite magnets focuses on the exchange interaction of hard magnetic phase with nanoparticles of soft magnetic phase known as the spring interaction effect. The process of magnetic reversal of nanocomposite magnets is discussed. KeywordsCoercive force; hard magnetite alloy; magnetic anisotropy; maximum energy product; nanocomposite material; rare earth compound; residual induction.

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“…For comparison other data taken from the literature [24,[41][42][43][44] are also given. Table 2 for the studied samples.…”

Section: Tablementioning

confidence: 99%

“…It has been proposed that the main reason of this behaviour could be the fact that Dy substitution results in an increase of the crystallisation temperature of the hard phase, which in turn requires a higher annealing temperature, and thus promotes excessive grain growth for the soft phases and leads to an undesirable microstructure [23]. The increase of the soft magnetic phase percentage, ␣-Fe, in melt-spun nanocomposite [24] or mechanically milled [25] Nd 2 Fe 14 B + x% Fe nanocomposite, increase the Curie temperature and improves the corrosion resistance in slightly acidic environment. Mössbauer spectroscopy studies have revealed that in Fe milled powders, a second sextet, with lower mean hyperfine field, was observed in the spectra and it was attributed to the grain boundaries [26].…”

Section: Introductionmentioning

confidence: 99%