“…The trade-off between the magnetic anisotropy and soft-phase fraction has always been a formidable challenge for the fabrication of highenergy-product bulk nanocomposite magnets [14,24]. Strikingly, the remanence ratio of (B r -B ⊥ r ) / B r with a value of ∼ 0.72 in this study is far away from the shaded region [3,8,[15][16][17][18][19][20][21][22][23][25][26][27][28][29] (as shown in Figure 4), indicating that a record-high magnetic anisotropy together with high soft-phase fraction has been obtained in bulk Pr 2 Fe 14 B/α-Fe nanocomposite magnet.…”
Section: Magnetic Propertiesmentioning
confidence: 68%
“…The trade-off between the magnetic anisotropy and soft-phase fraction has always been a formidable challenge for the fabrication of high-energy-product bulk nanocomposite magnets [14,24]. Strikingly, the remanence ratio of with a value of ∼0.72 in this study is far away from the shaded region [3,8,15-23,25-29] (as shown in Figure 4), indicating that a record-high magnetic anisotropy together with high soft-phase fraction has been obtained in bulk Pr 2 Fe 14 B/α-Fe nanocomposite magnet. Figure 3 Demagnetisation curves and the energy products ( BH in curves) parallel (//) and perpendicular (⊥) to pressure direction for the synthesised magnet. Figure 4 Representative magnetic anisotropy of bulk nanocomposite magnets with various soft-phase fractions.…”
Section: Resultsmentioning
confidence: 86%
“… Figure 3 Demagnetisation curves and the energy products ( BH in curves) parallel (//) and perpendicular (⊥) to pressure direction for the synthesised magnet. Figure 4 Representative magnetic anisotropy of bulk nanocomposite magnets with various soft-phase fractions. For comparison, the magnetic anisotropy of single-phase R-Fe-B and SmCo 5 magnets[8,20,21,25,26], SmCo/α-Fe(Co) magnets[3,8,15,28], multiphase hybrid magnets[16,17,29] and R 2 Fe 14 B/α-Fe magnets[18,19,23,27] reported in previous literatures together with the data in this work are presented.…”
Section: Resultsmentioning
confidence: 99%
“…To quantify the degree of magnetic anisotropy, the remanence ratio of (B r -B ⊥ r ) / B r is generally employed. Numerous studies over the recent decades indicated that with increasing softphase fraction, the magnetic anisotropy and energy density of bulk nanocomposite magnets are greatly For comparison, the magnetic anisotropy of single-phase R-Fe-B and SmCo 5 magnets [8,20,21,25,26], SmCo/α-Fe(Co) magnets [3,8,15,28], multiphase hybrid magnets [16,17,29] and R 2 Fe 14 B/α-Fe magnets [18,19,23,27] reported in previous literatures together with the data in this work are presented. deteriorated [7,18,23].…”
Aligning the hard phase has always been a great challenge in fabricating bulk nanocomposite magnets due to the high soft-phase fractions. In this work, anisotropic bulk Pr2Fe14B/α-Fe nanocomposite magnets have been fabricated from amorphous precursors by high-pressure thermal compression deformation. The synthesised magnet exhibits an ultrastrong magnetic anisotropy with a high soft-phase fraction of ∼29 wt.% and a dual-morphology grain structure that consists of equiaxed and lath-shaped grains. The anisotropy is originated from the strong (00l) crystallographic texture for Pr2Fe14B nanocrystals on account of its preferential nucleation and growth during the deformation with high stress and large strain. This study is favourable for the development of bulk nanocomposite magnets with superior energy products on the premise of high soft-phase fractions.
“…The trade-off between the magnetic anisotropy and soft-phase fraction has always been a formidable challenge for the fabrication of highenergy-product bulk nanocomposite magnets [14,24]. Strikingly, the remanence ratio of (B r -B ⊥ r ) / B r with a value of ∼ 0.72 in this study is far away from the shaded region [3,8,[15][16][17][18][19][20][21][22][23][25][26][27][28][29] (as shown in Figure 4), indicating that a record-high magnetic anisotropy together with high soft-phase fraction has been obtained in bulk Pr 2 Fe 14 B/α-Fe nanocomposite magnet.…”
Section: Magnetic Propertiesmentioning
confidence: 68%
“…The trade-off between the magnetic anisotropy and soft-phase fraction has always been a formidable challenge for the fabrication of high-energy-product bulk nanocomposite magnets [14,24]. Strikingly, the remanence ratio of with a value of ∼0.72 in this study is far away from the shaded region [3,8,15-23,25-29] (as shown in Figure 4), indicating that a record-high magnetic anisotropy together with high soft-phase fraction has been obtained in bulk Pr 2 Fe 14 B/α-Fe nanocomposite magnet. Figure 3 Demagnetisation curves and the energy products ( BH in curves) parallel (//) and perpendicular (⊥) to pressure direction for the synthesised magnet. Figure 4 Representative magnetic anisotropy of bulk nanocomposite magnets with various soft-phase fractions.…”
Section: Resultsmentioning
confidence: 86%
“… Figure 3 Demagnetisation curves and the energy products ( BH in curves) parallel (//) and perpendicular (⊥) to pressure direction for the synthesised magnet. Figure 4 Representative magnetic anisotropy of bulk nanocomposite magnets with various soft-phase fractions. For comparison, the magnetic anisotropy of single-phase R-Fe-B and SmCo 5 magnets[8,20,21,25,26], SmCo/α-Fe(Co) magnets[3,8,15,28], multiphase hybrid magnets[16,17,29] and R 2 Fe 14 B/α-Fe magnets[18,19,23,27] reported in previous literatures together with the data in this work are presented.…”
Section: Resultsmentioning
confidence: 99%
“…To quantify the degree of magnetic anisotropy, the remanence ratio of (B r -B ⊥ r ) / B r is generally employed. Numerous studies over the recent decades indicated that with increasing softphase fraction, the magnetic anisotropy and energy density of bulk nanocomposite magnets are greatly For comparison, the magnetic anisotropy of single-phase R-Fe-B and SmCo 5 magnets [8,20,21,25,26], SmCo/α-Fe(Co) magnets [3,8,15,28], multiphase hybrid magnets [16,17,29] and R 2 Fe 14 B/α-Fe magnets [18,19,23,27] reported in previous literatures together with the data in this work are presented. deteriorated [7,18,23].…”
Aligning the hard phase has always been a great challenge in fabricating bulk nanocomposite magnets due to the high soft-phase fractions. In this work, anisotropic bulk Pr2Fe14B/α-Fe nanocomposite magnets have been fabricated from amorphous precursors by high-pressure thermal compression deformation. The synthesised magnet exhibits an ultrastrong magnetic anisotropy with a high soft-phase fraction of ∼29 wt.% and a dual-morphology grain structure that consists of equiaxed and lath-shaped grains. The anisotropy is originated from the strong (00l) crystallographic texture for Pr2Fe14B nanocrystals on account of its preferential nucleation and growth during the deformation with high stress and large strain. This study is favourable for the development of bulk nanocomposite magnets with superior energy products on the premise of high soft-phase fractions.
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