Transformation behavior and magnetocaloric effect in Mn1−xCrxCoGe (x = 0.04 and 0.11) melt-spun ribbons tailored by heat treatment

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.

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Phase transformation and magnetocaloric effect of Co-doped Mn–Ni–In melt-spun ribbons

Journal of Applied Physics ◽

10.1063/5.0014883 ◽

2020 ◽

Vol 128 (5) ◽

pp. 055110

Author(s):

Yiqiao Yang ◽

Zongbin Li ◽

César Fidel Sánchez-Valdés ◽

José Luis Sánchez Llamazares ◽

Bo Yang ◽

...

Keyword(s):

Phase Transformation ◽

Magnetocaloric Effect ◽

Melt Spun ◽

Melt Spun Ribbons ◽

Co Doped

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Effect of heat treatment on structure, magnetization and magnetostriction of Fe81Ga19 melt-spun ribbons

Physica B Condensed Matter ◽

10.1016/j.physb.2009.07.185 ◽

2009 ◽

Vol 404 (21) ◽

pp. 4155-4158 ◽

Cited By ~ 13

Author(s):

Jingjing Zhang ◽

Tianyu Ma ◽

Mi Yan

Keyword(s):

Heat Treatment ◽

Melt Spun ◽

Melt Spun Ribbons

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EFFECT OF NANOCRYSTALLIZATION ANNEALING ON MAGNETIC PROPERTIES AND MAGNETOIMPEDANCE OF CO-BASE RIBBONS

International Journal of Modern Physics Conference Series ◽

10.1142/s2010194512002826 ◽

2012 ◽

Vol 05 ◽

pp. 841-846

Author(s):

AMIR KEYVANARA ◽

REZA GHOLAMIPOUR ◽

SHAMSEDIN MIRDAMADI ◽

FARZAD SHAHRI ◽

HOSSEIN SEPEHRI AMIN

Keyword(s):

Electron Microscopy ◽

Heat Treatment ◽

Magnetic Properties ◽

Structural Studies ◽

X Ray Diffraction ◽

X Ray ◽

Transmission Electron ◽

Melt Spun ◽

Melt Spun Ribbons ◽

Nanocrystalline Phases

Melt spun ribbons of Co 64 Fe 4 Ni 2 B 19 Si 8 Cr 3 alloy have been prepared and the nanocrystallization process was carried out by the heat treatment of the as spun ribbons above the crystallization temperature. Structural studies of the samples have been performed by transmission electron microscopy and X-ray diffraction. Magnetic properties of the samples and magnetoimpedance measurements were investigated and it was revealed that magnetic properties and magnetoimpedance of the samples deteriorate by the formation of nanocrystalline phases.

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Critical behavior and magnetocaloric effect of Gd65Mn35−xGex (x = 0, 5, and 10) melt-spun ribbons

Journal of Applied Physics ◽

10.1063/1.4740062 ◽

2012 ◽

Vol 112 (3) ◽

pp. 033903 ◽

Cited By ~ 12

Author(s):

X. C. Zhong ◽

J. X. Min ◽

Z. G. Zheng ◽

Z. W. Liu ◽

D. C. Zeng

Keyword(s):

Magnetocaloric Effect ◽

Critical Behavior ◽

Melt Spun ◽

Melt Spun Ribbons

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Effect of super-heat treatment and quenching wheel speed on the structure and magnetic properties of Fe–Si–Nb–Cu–B–Al–Ge melt spun ribbons

Journal of Non-Crystalline Solids ◽

10.1016/j.jnoncrysol.2007.08.036 ◽

2008 ◽

Vol 354 (14) ◽

pp. 1487-1493 ◽

Cited By ~ 19

Author(s):

F. Shahri ◽

A. Beitollahi

Keyword(s):

Heat Treatment ◽

Magnetic Properties ◽

Wheel Speed ◽

Melt Spun ◽

Melt Spun Ribbons

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Effect of Rotation Speed on Transformation Behavior in Ti-48at%Ni Shape Memory Alloy Melt-Spun Ribbon

Materials Science Forum ◽

10.4028/www.scientific.net/msf.561-565.1481 ◽

2007 ◽

Vol 561-565 ◽

pp. 1481-1484 ◽

Cited By ~ 2

Author(s):

Hong Yan Xing ◽

Hee Young Kim ◽

Shuichi Miyazaki

Keyword(s):

Shape Memory Alloy ◽

Shape Memory ◽

Melt Spinning ◽

Rotation Speed ◽

Treatment Temperature ◽

Transformation Behavior ◽

Melt Spun ◽

B2 Phase ◽

Melt Spun Ribbons ◽

Effects Of Rotation

Effects of rotation speed on the microstructure and transformation behavior were investigated for Ti-48at%Ni melt-spun ribbons. The Ti-48at%Ni shape memory alloy ribbons were fabricated by the melt-spinning method with various rotation speeds ranging from 2500rpm to 7500rpm. The melt-spun ribbons were completely crystallized to TiNi B2 phase during solidification at lower rotation speeds less than 4000rpm. Amorphous and B2 phase coexisted in the melt-spun ribbons fabricated at higher rotation speeds of 5000rpm and 7500rpm. The martensitic transformation behavior was investigated both in the as-spun and heat-treated ribbons. The transformation temperature increased with decreasing cooling rate and increasing heat-treatment temperature.

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