Scheduled System Maintenance:
Some services will be unavailable Sunday, March 29th through Monday, March 30th. We apologize for the inconvenience.
By Topic

Magnetocaloric Effect in \hbox {Ni}_{0.5}\hbox {Mn}_{0.5-{\rm x}}\hbox {Sn}_{\rm x} Alloys

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

7 Author(s)
Phan, T.L. ; Dept. of Phys., Chungbuk Nat. Univ., Cheongju, South Korea ; Duc, N.H. ; Yen, N.H. ; Thanh, P.T.
more authors

We have studied the magnetic properties and magnetocaloric effect in bulk Ni0.5Mn0.5-xSnx alloys (x = 0.2 and 0.3) prepared by arc-melting. Experimental results reveal that with increasing Sn content the ferromagnetic order slightly decreases, but the Curie temperature (TC) increases from 333 K (for x = 0.2) to about 354 K (for x - 0.3). Based on magnetic-field dependences of magnetization (M - H curves) recorded at various temperatures, ΔSM (T) curves of the samples under an applied field interval of 0-12.0 kOe were obtained. Maximum ΔSM values achieved around TC are about 1.2 and 1.1 for x = 0.2 and 0.3, respectively. Detailed analyses of M - H curves in the vicinity of TC, used the Arrott-Noakes method, reveal the samples undergoing the second-order phase transition with the critical exponents of β = 0.503 ± 0.021 and γ = 1.246 ± 0.013 for x = 0.2, and of β = 0.426 ± 0.016 and 7 = 1.232 ± 0.014 for x = 0.3. The difference in value of the exponents together with x-ray diffraction data will be used to explain the magnetic properties and magnetocaloric effect in Ni0.5Mn0.5-xSnx.

Published in:

Magnetics, IEEE Transactions on  (Volume:48 ,  Issue: 4 )