Large reversible magnetocaloric effect in TbCoC2 in low magnetic field

2008 ◽  
Vol 92 (24) ◽  
pp. 242508 ◽  
Author(s):  
B. Li ◽  
W. J. Hu ◽  
X. G. Liu ◽  
F. Yang ◽  
W. J. Ren ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetocaloric Effect ◽  
Low Magnetic Field

Large magnetocaloric effect at low magnetic field in Ni50−xCoxMn35In15 ribbons

2011 ◽  
Vol 109 (7) ◽  
pp. 07A903 ◽  
Author(s):  
W. Guan ◽  
Q. R. Liu ◽  
B. Gao ◽  
S. Yang ◽  
Y. Wang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetocaloric Effect ◽  
Low Magnetic Field

Magnetocaloric effect of (Gd1−xNdx)Co2 alloys in low magnetic field

Rare Metals ◽  
2008 ◽  
Vol 27 (4) ◽  
pp. 350-353 ◽  
Author(s):  
X CHEN ◽  
Y ZHUANG ◽  
J YAN ◽  
K ZHOU ◽  
K LI
Keyword(s):  
Magnetic Field ◽  
Magnetocaloric Effect ◽  
Low Magnetic Field

Observation of giant magnetocaloric effect under low magnetic field in Eu1−xBaxTiO3

2017 ◽  
Vol 694 ◽  
pp. 235-240 ◽  
Author(s):  
Zhao-Jun Mo ◽  
Zhi-Hong Hao ◽  
Jin-Zhi Deng ◽  
Jun Shen ◽  
Lan Li ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetocaloric Effect ◽  
Giant Magnetocaloric Effect ◽  
Low Magnetic Field

scholarly journals Tailoring of Magnetocaloric Effect in Ni45.5Mn43.0In11.5 Metamagnetic Shape Memory Alloy

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
W. O. Rosa ◽  
L. González ◽  
J. García ◽  
T. Sánchez ◽  
V. Vega ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetocaloric Effect ◽  
Annealing Temperature ◽  
Thermal Hysteresis ◽  
Annealing Treatment ◽  
Martensitic Transition ◽  
Time Treatment ◽  
Highly Sensitive ◽  
Short Time ◽  
Low Magnetic Field

We investigate the direct and inverse magnetocaloric effect in Ni45.5Mn43.0In11.5 Heusler alloy ribbons comparing the results obtained for the as-quenched sample with the ones after different annealing procedures. An enhancement and shift of the entropy maximum to near room temperature is observed in all annealed samples. A remarkable magnetocaloric effect is observed in samples with short-time treatment (10 minutes) and at the lowest annealing temperature. We show that the suppressing of uncompensated martensitic transition and thermal hysteresis are both influenced by the heat treatment. Also, an improvement on Curie’s temperature is observed and, at low magnetic field, it has been risen up to 310 K. Our results demonstrate that the martensitic transformation is highly sensitive to the applied magnetic field and also to the annealing treatment, which means that the magnetocaloric effect can be tuned showing different behaviors for each sample.

scholarly journals Effect of changing P/Ge and Mn/Fe ratios on the magnetocaloric effect and structural transition in the (Mn,Fe)2 (P,Ge) intermetallic compounds

2016 ◽  
Vol 34 (3) ◽  
pp. 494-502 ◽  
Author(s):  
P. Wlodarczyk ◽  
L. Hawelek ◽  
P. Zackiewicz ◽  
M. Kaminska ◽  
A. Chrobak ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Curie Temperature ◽  
Magnetocaloric Effect ◽  
Intermetallic Compounds ◽  
Structural Transition ◽  
Thermal Hysteresis ◽  
Simultaneous Increase ◽  
Low Field ◽  
Transition Enthalpy ◽  
Low Magnetic Field

AbstractThe magnetocaloric effect in the MnxFe2−xP1−yGey intermetallic compounds with the amount of Mn in the range of x = 1.05 to 1.17 and amount of Ge in the range of y = 0.19 to 0.22 has been studied. It was found that a higher Ge/P ratio causes an increase in Curie temperature, magnetocaloric effect at low field (up to 1 T), activation energy of structural transition and a decrease in thermal hysteresis, as well as transition enthalpy. Contrary to this observation, higher Mn/Fe ratio causes a decrease in Curie temperature, slight decrease of magnetocaloric effect at low magnetic field, and an increase in thermal hysteresis. Simultaneous increase of both ratios may be very advantageous, as the thermal hysteresis can be lowered and magnetocaloric effect can be enhanced without changing the Curie temperature. Some hints about optimization of the composition for applications at low magnetic fields (0.5 T to 2 T) have been presented.

Large magnetocaloric effect in Sm0.52Sr0.48MnO3 in low magnetic field

2008 ◽  
Vol 92 (18) ◽  
pp. 182506 ◽  
Author(s):  
P. Sarkar ◽  
P. Mandal ◽  
P. Choudhury
Keyword(s):  
Magnetic Field ◽  
Magnetocaloric Effect ◽  
Low Magnetic Field

scholarly journals Tuning Magnetocaloric Properties for La-=SUB=-1-x-=/SUB=-Sr-=SUB=-x-=/SUB=-CoO-=SUB=-3-=/SUB=-

2021 ◽  
Vol 63 (10) ◽  
pp. 1551
Author(s):  
E.M. Ahmed ◽  
H.R. Alamri ◽  
S.M. Elghnam ◽  
O. Eldarawi ◽  
T.E. Tawfik ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Phase Transition ◽  
Magnetocaloric Effect ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Paramagnetic State ◽  
Magnetic Entropy ◽  
Magnetocaloric Properties ◽  
Low Magnetic Field

Low magnetic field magnetocaloric (MC) properties of La1-xSrxCoO3 (x=0.3 and 0.5) near phase transition from a ferromagnetic to a paramagnetic state were investigated. It is shown that the change of Sr content allows MC effect in La1-xSrxCoO3 to be tunable, which is more practical for construction of MC refrigeration. MC properties of the x=0.5 sample are significantly greater than that of the x=0.3 one. Furthermore, the results show that MC properties of La1-xSrxCoO3 samples are significantly larger, and comparable with some MC properties of many materials like Gd1-xCaxBaCo2O5.5 and Ge0.95Mn0.05. Keywords: magnetocaloric effect, La1-xSrxCoO3, magnetic entropy change.

scholarly journals Effect of B alloying on magnetocaloric effect of Gd5.1Si2Ge2 alloy in low magnetic field

2011 ◽  
Vol 21 (5) ◽  
pp. 413-417 ◽  
Author(s):  
Xue-ling HOU ◽  
Xiang JIE ◽  
Jian HUANG ◽  
Zhi ZENG ◽  
Hui-min HU ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetocaloric Effect ◽  
Low Magnetic Field
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