Enhanced Magnetic Properties of Spark Plasma Sintered (La/Ce)-Fe-B Magnets

被引：21

作者：

Lu, Q. M. ^{[1
]}

Niu, J. ^{[1
]}

Liu, W. Q. ^{[1
]}

Yue, M. ^{[1
]}

Altounian, Z. ^{[2
]}

机构：

[1] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

[2] McGill Univ, Ctr Phys Mat, Phys Dept, Montreal, PQ H3A 2T8, Canada

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2017年 / 53卷 / 11期

基金：

中国国家自然科学基金; 北京市自然科学基金;

关键词：

Light rare earth; magnetic properties; Nd2Fe14B; NdCu alloy; B PERMANENT-MAGNETS; ND; VALENCE; CERIUM; LA; CE;

D O I：

10.1109/TMAG.2017.2718041

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

La substitution for Ce inhibits the growth of the CeFe2 phase and promotes the formation of the single 2:14:1 phase, leading to an improvement in the magnetic properties of melt-spun (La/Ce)(3)Fe14B ribbons. Among which, the (La0.3Ce0.7)(3)Fe14B ribbon produced a high remanence of 6.86 kG, a coercivity of 5.51 kOe, and a maximum energy product (BH)(max) of 7.68 MGOe. After spark plasma sintering, the compacted (La(0.3)Ce(0.)7)(3)Fe14B magnet with good remanence and coercivity was successfully prepared, and these properties were enhanced to 5.14 kG and 5.60 kOe, respectively, leading to an energy product of 4.59 MGOe for the magnet with 5 wt % NdCu addition.

引用

页数：3

共 17 条

[1] Mixed valency and site-preference chemistry for cerium and its compounds: A predictive density-functional theory study [J].

Alam, Aftab ;

Johnson, D. D. .

PHYSICAL REVIEW B, 2014, 89 (23)

[2] Site-preference and valency for rare-earth sites in (R-Ce)2Fe14B magnets [J].

Alam, Aftab ;

Khan, Mahmud ;

McCallum, R. W. ;

Johnson, D. D. .

APPLIED PHYSICS LETTERS, 2013, 102 (04)

[3]

[Anonymous], 2016, ANAL PRESENT STATUS

[4]

Buschow K. H. J., 1988, HDB MAGNETIC MAT, V4, P11

[5] Spectroscopic valence of cerium in cerium-lanthanum-iron compounds [J].

Capehart, TW ;

Mishra, RK ;

Fuerst, CD ;

Meisner, GP ;

Pinkerton, FE ;

Herbst, JF .

PHYSICAL REVIEW B, 1997, 55 (17) :11496-11501

[6] MISCH-METAL-IRON BASED MAGNETS [J].

GONG, W ;

HADJIPANAYIS, GC .

JOURNAL OF APPLIED PHYSICS, 1988, 63 (08) :3513-3515

[7] Magnetic hardening of Ce2Fe14B [J].

Herbst, J. F. ;

Meyer, M. S. ;

Pinkerton, F. E. .

JOURNAL OF APPLIED PHYSICS, 2012, 111 (07)

[8] Manipulating Ce Valence in RE2Fe14B Tetragonal Compounds by La-Ce Co-doping: Resultant Crystallographic and Magnetic Anomaly [J].

Jin, Jiaying ;

Zhang, Yujing ;

Bai, Guohua ;

Qian, Zeyu ;

Wu, Chen ;

Ma, Tianyu ;

Shen, Baogen ;

Yan, Mi .

SCIENTIFIC REPORTS, 2016, 6

[9] Substitution of Ce for Nd in preparing R2Fe14B nanocrystalline magnets [J].

Li, Z. B. ;

Shen, B. G. ;

Zhang, M. ;

Hu, F. X. ;

Sun, J. R. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 628 :325-328

[10] The partitioning of La and Y in Nd-Fe-B magnets: A first-principles study [J].

Liu, X. B. ;

Altounian, Z. ;

Huang, Meidong ;

Zhang, Qiming ;

Liu, J. Ping .

JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 549 :366-369

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