Structural and magnetic properties of SmCo5.6Ti0.4 alloy

Yao, Zhen‐Xing; Xu, Qiang; Jiang, Chengbao

doi:10.1016/j.jmmm.2008.01.042

Cited by 17 publications

(4 citation statements)

References 14 publications

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“…The i H c of the as-milled/annealed SmCo 7Àx Mo x increases initially as x increases, reaching a maximum value of 1.26 T at x ¼ 0.2, and then decreases for larger values of x. It should also be noted that all of these samples possess coercivities larger than 0.95 T. The high coercivity of the samples can be primarily attributed to their nanograin microstructures which provide a large number of strong pinning surfaces for the domain wall motion [5,12]. The proper amounts of Co 3 Mo phase precipitating in the as-annealed samples with x ¼ 0.1 and 0.2 maybe also acts as the pinning sites, and induces the coercivity slight increase.…”

Section: Methodsmentioning

confidence: 92%

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Structural and magnetic properties of SmCo7−Mo alloys

Yao

Jiang

2009

Journal of Magnetism and Magnetic Materials

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Section: Methodsmentioning

confidence: 92%

“…Recently, other Sm-Co series alloys with the TbCu 7 -type (1:7) structure have attracted considerable attention due to their potentials for high-temperature applications [4][5][6][7][8][9][10][11][12][13]. The Sm-Co 1:7-type structure is derived from the 1:5-type structure by random substitution of a pair of Co in some Sm sites.…”

Section: Introductionmentioning

confidence: 99%

Structural and magnetic properties of SmCo7−Mo alloys

Yao

Jiang

2009

Journal of Magnetism and Magnetic Materials

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“…Research on SmCo 5 and YCo 5 in the past has mainly focused on investigating the incorporation of various elements into their structures. These elements are the transition metals, like Fe, Cu, Ti, Zr, Ni, and Mn [24][25][26][27][28][29][30], non-metallic elements, such as C, H, and Si [31][32][33], and rare-earth elements, like La, Ce, Pr, Nd, Dy, and Tm [34][35][36][37][38]. The aim has been to fine-tune the phase composition and magnetic characteristics of permanent magnets.…”

Section: Introductionmentioning

confidence: 99%

Phase Formation and Magnetic Properties of (Y1−xSmx)Co5 Melt-Spun Ribbons

Liu,

Yang,

Zheng

et al. 2024

Metals

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Using X-ray diffraction (XRD) and a vibrating sample magnetometer (VSM), the effects of Sm substitution, wheel speed, and annealing temperature on the phase formation and magnetic properties of (Y1−xSmx)Co5 (x = 0.2, 0.3, 0.4, 0.5) melt-spun ribbons were investigated. The results indicate the following: (1) With the increase in Sm substitution, it was found that (Y1−xSmx)Co5 ribbons are entirely composed of the (Y-Sm)Co5 phase with a CaCu5-type structure. Additionally, the coercivity gradually increases, while the remanence and saturation magnetization gradually decrease. (2) As the wheel speed increases, the (Y1−xSmx)Co5 ribbons exhibit an increasing proportion of (Y-Sm)Co5 phase until reaching a speed of 40 m/s, where they are entirely composed of the (Y-Sm)Co5 phase. Magnetic measurements show that the coercivity (Hcj) and remanence (Br) of (Y0.5Sm0.5)Co5 ribbons increase gradually with increasing wheel speed, while saturation magnetization decreases. The variation in magnetic properties is mainly attributed to the formation of nucleation centers for reversed magnetic domain (2:7 and 2:17 phases); (3) (Y0.5Sm0.5)Co5 ribbons are composed of the (Y-Sm)Co5 phase and a small amount of the Sm2Co7 phase after annealing at 550 °C, 600 °C, and 650 °C. Temperature elevation promotes crystallization of the amorphous phase, resulting in a gradual decrease in coercivity, while the remanence and saturation magnetization exhibit an overall increasing trend. Through continuous optimization of the process, favorable magnetic properties were achieved under the conditions of a 0.5 Sm substitution level, a wheel speed of 40 m/s, and an annealing temperature of 550 °C, with a coercivity of 7.98 kOe, remanence of 444 kA/m, and saturation magnetization of 508 kA/m.

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“…So far, the doping elements M can be classified to three types: the first is iron group doping elements with non-full 3d-shell, e.g. Ti [3][4][5][6][7], Mn [8], Fe [9][10][11] and Cu [7,10,12]; the second type is semiconductor elements, e.g. Si [12] and Ga [1]; the third is palladium group elements with non-full 4d-shell, e.g.…”

Section: Introductionmentioning

confidence: 99%