Magnetic properties of (Sm,Zr)Fe10 and (Sm,Zr)Fe9.5Ti0.5 melt-spun ribbons

2022 ◽  
Vol 542 ◽  
pp. 168573
Author(s):  
Tetsuji Saito
2002 ◽  
Vol 91 (11) ◽  
pp. 9267-9271 ◽  
Author(s):  
Z. G. Sun ◽  
W. Löser ◽  
J. Eckert ◽  
K.-H. Müller ◽  
L. Schultz

2018 ◽  
Vol 31 (11) ◽  
pp. 3705-3710 ◽  
Author(s):  
Chengfu Xu ◽  
Kanghua Chen ◽  
Zhengfei Gu ◽  
Guanghui Rao ◽  
Gang Cheng ◽  
...  

2021 ◽  
Vol 21 (4) ◽  
pp. 2552-2557
Author(s):  
Nguyen Hai Yen ◽  
Nguyen Hoang Ha ◽  
Pham Thi Thanh ◽  
Nguyen Huy Ngoc ◽  
Tran Dang Thanh ◽  
...  

In this work, we investigated magnetic properties and magnetocaloric effect in Fe90−xCoxZr7Cu1B2 (x = 0, 1, 2, 3 and 4) melt-spun ribbons. The ribbons were prepared by using a melt-spinning method with a tangential velocity of a copper wheel of 40 m·s-1. The obtained ribbons are almost amorphous. The alloys exhibit typical soft magnetic behavior with low coercivity at room temperature. A minor replacement of Fe by Co gives an increment in Curie temperature (TC) of the alloys to higher temperatures. The TC of the alloys increases from 242 to 342 K with an increase of x from 0 to 4. Maximum magnetic entropy change, ΔSm max, of the alloys, was found to be larger than 0.7 J·kg-1·K-1 in a magnetic field change ΔH of 12 kOe for all the concentrations of Co. High refrigerant capacitys (RC >100 J ·kg-1 with ΔH = 12 kOe) at room temperature region have been obtained for the alloys. The large magnetocaloric effect near room temperature suggests that the alloys can be considered as magnetic refrigerants in the range of 250–350 K.


2011 ◽  
Vol 109 (7) ◽  
pp. 07A925 ◽  
Author(s):  
Tetsuji Saito ◽  
Keiichi Sudo

1992 ◽  
Vol 33 (2) ◽  
pp. 146-150 ◽  
Author(s):  
S. Sugimoto ◽  
K. Kurihara ◽  
H. Nakamura ◽  
M. Okada ◽  
M. Homma

1992 ◽  
Vol 7 (12) ◽  
pp. 931-936 ◽  
Author(s):  
K. Kurihara ◽  
H. Nakamura ◽  
S. Sugimoto ◽  
M. Okada ◽  
M. Homma

2010 ◽  
Vol 636-637 ◽  
pp. 404-410
Author(s):  
Sofoklis S. Makridis

We have investigated the structural and magnetic properties of Sm(Co0.70Fe0.1Ni0.12Zr0.04B0.04)7.5 melt spun ribbons. The arc-melted bulk samples have been used to obtain ribbons at 37 up to 55 m/sec while annealing has been performed in argon atmosphere for 30-75 min at 600-870 oC. In as-spun ribbons the hexagonal SmCo7 (TbCu7-type of structure) of crystal structure has been determined from x-ray diffraction patterns, while fcc-Co has been identified as a secondary phase. After annealing, the 1:7 phase of the as-spun ribbons transforms into 2:17 and 1:5 phases. TEM analysis shows a homogeneous nanocrystalline microstructure with average grain size of 30-80 nm. Coercivity values of 15-27 kOe are obtained from hysteresis loops traced at non-saturating fields. The coercivity decreases as temperature increases, but it is high enough to maintain values higher than 5 kOe at 380 oC. The maximum energy product at room temperature increases, as high as 7.2 MGOe, for melt-spun ribbons produced at higher wheel speed.


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