Investigation of field-controlled magnetocaloric switching and magnetodielectric phenomena in spin-chain compound Er2BaNiO5

Author(s):  
Arnab Pal ◽  
Zhenjie Feng ◽  
Hao Wu ◽  
Ke Wang ◽  
Jingying Si ◽  
...  

Abstract The Haldane spin-chain compound Er2BaNiO5 has been known to possess magnetoelectric coupling below the magnetic ordering temperature. Here we report various low-temperature magnetic and magnetocaloric properties, and magnetodielectric effect above magnetic ordering temperature in this compound. The present compound displays a coexistence of conventional and inverse magnetocaloric effects with a large entropy change of 5.9 and −2.5 J/kg K, respectively. Further, it exhibits a remarkable switching between them, which can be tuned with temperature and magnetic field. In addition, evolution of two magnetic field-dependent metamagnetic transitions at 19.7 and 27.7 kOe, and their correlation with magnetocaloric switching effect, make this compound effective for potential applications. On the other hand, demonstration of intrinsic magnetodielectric effect (1.9%) near and above antiferromagnetic ordering temperature, through a moderate coupling between electric dipoles and magnetic spins, establishes this compound as a useful candidate for future research. A detailed analysis of these findings, in a framework of different magnetic interactions and magnetocrystalline anisotropies, is discussed here. Overall, these results may provide a future pathway to tune the magnetic, magnetodielectric, and magnetocaloric properties in this compound toward better application potential.

2018 ◽  
Vol 47 (34) ◽  
pp. 11888-11894 ◽  
Author(s):  
Gabriela Handzlik ◽  
Barbara Sieklucka ◽  
Dawid Pinkowicz

Anionic bridging ligands formate, cyanide and azide have been used to form cross-links in a ferrimagnetic coordination framework, resulting in competing magnetic interactions that decrease the magnetic ordering temperature and result in peculiar magnetic properties.


2018 ◽  
Vol 6 (42) ◽  
pp. 21149-21155 ◽  
Author(s):  
Rukang Li ◽  
Pascal Manuel ◽  
Fabio Orlandi ◽  
Colin Greaves

The mineral gaudefroyite, with a Kagomé-related structure, shows excellent magnetocaloric properties near its magnetic ordering temperature.


1986 ◽  
Vol 56 (15) ◽  
pp. 1587-1590 ◽  
Author(s):  
A. Sawada ◽  
H. Yano ◽  
M. Kato ◽  
K. Iwahashi ◽  
Y. Masuda

2021 ◽  
Author(s):  
Royce A. Davidson ◽  
Joel S. Miller

Li[TCNE] is a weak ferromagnet whose canting angle, α, as a function of temperature and pressure, α(T) and α(P), have similar but unexpected dependencies that are attributed to a competition between the intra- and interlayer C⋯N interlattice.


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