Suppression of reentrant spin glass and induced zero-field-cooled exchange bias by lattice contraction in NiMnSbAl alloys

2018 ◽  
Vol 766 ◽  
pp. 791-795 ◽  
Author(s):  
Y. Li ◽  
N.L. Lu ◽  
S. Shi ◽  
Y.F. Jin ◽  
Z.D. Han ◽  
...  
APL Materials ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 011104
Author(s):  
Fanghua Tian ◽  
Xiaoqin Ke ◽  
Kaiyan Cao ◽  
Dingchen Wang ◽  
Qizhong Zhao ◽  
...  

2016 ◽  
Vol 119 (4) ◽  
pp. 043901 ◽  
Author(s):  
S. Nayak ◽  
D. C. Joshi ◽  
M. Krautz ◽  
A. Waske ◽  
J. Eckert ◽  
...  

2015 ◽  
Vol 3 (22) ◽  
pp. 5683-5696 ◽  
Author(s):  
S. Lin ◽  
D. F. Shao ◽  
J. C. Lin ◽  
L. Zu ◽  
X. C. Kan ◽  
...  

The nature of spin-glass behavior and zero-field-cooled exchange bias of antiperovskite PdNCr3 has been confirmed via the combination of experiment measurements and theoretical calculations.


2015 ◽  
Vol 2015 ◽  
pp. 1-6
Author(s):  
Qing Lin ◽  
Xiaofang Liu ◽  
Yun He ◽  
Haifu Huang ◽  
Xingcan Shen

Multimetallic Prussian blue compound Ni0.25Mn1.25[Fe(CN)6]·6.1H2O has been prepared by coprecipitation. The temperature-dependent magnetic susceptibilities show the magnet transition for the compound at 8.5 K. According to DC variable-temperature magnetic susceptibility paramagnetic Curie temperatureθis −9.32 K. The observed value of coercive field (Hc) and the remanent magnetization (Mr) for the compound are 0.32 KOe and 0.36 μB. According to study of zero-field-cooled (ZFC) and field-cooled (FC) magnetization curves and AC magnetization curves, there exists a spin-glass behaviour in the compound, which exhibits freezing temperatureTg=7.76 K, below magnetic transitionTC=8.5 K; that glass behavior is termed “reentrant” spin glass.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
F. G. Silva ◽  
J. Depeyrot ◽  
Yu. L. Raikher ◽  
V. I. Stepanov ◽  
I. S. Poperechny ◽  
...  

AbstractExchange bias properties of MnFe$$_2$$ 2 O$$_4$$ 4 @$$\gamma$$ γ –Fe$$_2$$ 2 O$$_3$$ 3 core–shell nanoparticles are investigated. The measured field and temperature dependencies of the magnetization point out a well-ordered ferrimagnetic core surrounded by a layer with spin glass-like arrangement. Quasi-static SQUID magnetization measurements are presented along with high-amplitude pulse ones and are cross-analyzed by comparison against ferromagnetic resonance experiments at 9 GHz. These measurements allow one to discern three types of magnetic anisotropies affecting the dynamics of the magnetic moment of the well-ordered ferrimagnetic NP’s core viz. the easy-axis (uniaxial) anisotropy, the unidirectional exchange-bias anisotropy and the rotatable anisotropy. The uniaxial anisotropy originates from the structural core–shell interface. The unidirectional exchange-bias anisotropy is associated with the spin-coupling at the ferrimagnetic/spin glass-like interface; it is observable only at low temperatures after a field-cooling process. The rotatable anisotropy is caused by partially-pinned spins at the core/shell interface; it manifests itself as an intrinsic field always parallel to the external applied magnetic field. The whole set of experimental results is interpreted in the framework of superparamagnetic theory, i.e., essentially taking into account the effect of thermal fluctuations on the magnetic moment of the particle core. In particular, it is found that the rotatable anisotropy of our system is of a uniaxial type.


2009 ◽  
Vol 79 (9) ◽  
Author(s):  
S. Chatterjee ◽  
S. Giri ◽  
S. K. De ◽  
S. Majumdar

1992 ◽  
Vol 104-107 ◽  
pp. 2069-2071 ◽  
Author(s):  
A. Wulfes ◽  
Ch. Böttger ◽  
J. Hesse ◽  
J. Sievert ◽  
H. Ahlers

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