Magnetocaloric properties and exchange bias effect in Al for Sn substituted Ni48Mn39.5Sn12.5 Heusler alloy ribbons

Abstract We report a giant exchange bias (EB) field of about 3.68 KOe during field cooled process in all-d-metal Ni40(FeCo)4Mn36Ti20 Heusler alloy. The study of magnetic memory effect and isothermal magnetic relaxation processes suggest that the giant EB field arises due to the possible coexistence of antiferromagnetic (AFM) and ferromagnetic (FM) phase exchange interaction in the studied system at temperatures below 35 K. Furthermore, the temperature and cooling field dependence of EB effect are analyzed which are related to the change in unidirectional anisotropy at FM/AFM interface. The study of a well-established training effect confirms the intrinsic nature of the observed EB behavior. This result will open up a new way towards the development of EB materials considering all-d-metal Heusler alloy systems.

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Magnetoresistance and Exchange Bias Effect of (Co2MnSi)1-X-(NiO)X Nanocomposites

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.399-401.620 ◽

2011 ◽

Vol 399-401 ◽

pp. 620-624

Author(s):

Xin Le Cai ◽

Shan Dong Li ◽

Mei Mei Liu ◽

Jian Peng Wu ◽

Yi Hu ◽

...

Keyword(s):

Mechanical Alloying ◽

Exchange Bias ◽

Heusler Alloy ◽

Nio Nanoparticles ◽

Bias Effect ◽

Exchange Bias Effect

The (Co2MnSi)1-x-(NiO)x(x = 0.0, 0.1, 0.2, 0.3) nanocomposites were fabricated by mechanical alloying using Co2MnSi Heusler alloy and NiO nanoparticles. It is revealed that antiferromagnetic NiO nanocrystallines dramatically enhances the magnetoresistance of the nanocomposites more than 20 times larger than that of the NiO-free Co2MnSi alloys at 300 K. The Exchange bias effect of the nanocomposites suggests that the spin-dependent tunneling and scattering at the interfaces of ferromagnetic/antiferromagnetic are responsible for the enhancement of the magnetoresistance.

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Heusler Alloy Ribbons: Structure, Martensitic Transformation, Magnetic Transitions, and Exchange Bias Effect

Novel Functional Magnetic Materials - Springer Series in Materials Science ◽

10.1007/978-3-319-26106-5_3 ◽

2016 ◽

pp. 83-114 ◽

Cited By ~ 2

Author(s):

L. González-Legarreta ◽

R. Caballero-Flores ◽

W. O. Rosa ◽

Mihail Ipatov ◽

L. Escoda ◽

...

Keyword(s):

Martensitic Transformation ◽

Exchange Bias ◽

Heusler Alloy ◽

Magnetic Transitions ◽

Bias Effect ◽

Exchange Bias Effect

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Exchange Bias Effect in Full-Heusler Alloy Co$_2$Cr$_0.6$Fe$_0.4$Al Epitaxial Thin Films

IEEE Transactions on Magnetics ◽

10.1109/tmag.2006.879154 ◽

2006 ◽

Vol 42 (10) ◽

pp. 3002-3004 ◽

Cited By ~ 7

Author(s):

T. Ishikawa ◽

T. Mar ◽

K.-I. Matsuda ◽

T. Uemura ◽

M. Yamamoto

Keyword(s):

Thin Films ◽

Exchange Bias ◽

Heusler Alloy ◽

Epitaxial Thin Films ◽

Bias Effect ◽

Exchange Bias Effect ◽

Full Heusler

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Tuning Exchange Bias Effect in Ni50Mn36Sn14 Heusler Alloy

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.320.60 ◽

2013 ◽

Vol 320 ◽

pp. 60-66

Author(s):

Zhe Li ◽

Cheng Yang ◽

Ming Xin Wang ◽

Jian Yin ◽

Jun Jun Wu ◽

...

Keyword(s):

Hysteresis Loop ◽

Exchange Bias ◽

Heusler Alloy ◽

Bias Effect ◽

Exchange Bias Effect ◽

Martensitic State ◽

Loop Measurement ◽

Shifted Hysteresis Loop

The tuning exchange bias HE at martensitic state of Ni50Mn36Sn14 alloy has been investigated by means of hysteresis loop measurement. It was found that the whole loop can be tuned by HFC from a double-shifted to a single-shifted hysteresis loop, leading to an appearance of maximum HEat HFC = 0.5 kOe. This behavior could be ascribed to the competition between two types of AFM clusters and HFC,which exhibits predominantly atlow HFC range, while the competition between FM clusters and HFC, which becomes predominant at high HFC range.

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