scholarly journals Modeling hysteresis curves of La(FeCoSi)13 compound near the transition point with the GRUCAD model

Open Physics ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 266-270 ◽  
Author(s):  
Roman Gozdur ◽  
Piotr Gębara ◽  
Krzysztof Chwastek

Abstract The paper presents a new approach to modeling of magnetic properties and the influence of temperature on hysteresis loops in La(FeCoSi)13 magnetocaloric compound. The GRUCAD hysteresis model has been used for analysis of magnetic behavior in the vicinity of the magnetic phase transition. The modeling results are in a qualitative agreement with experiment.

2021 ◽  
Vol 99 (1) ◽  
pp. 18-23
Author(s):  
Charlie Joe Croxford ◽  
Rajpreet Kaur ◽  
Kultar Singh ◽  
Mandeep Singh Bakshi

Stable colloidal zein nanoparticles (NPs) were synthesized by using controlled precipitation method. They were made fluorescence active by incorporating a small amount of fluorescence quinolinium surfactant. The incorporation of fluorescence surfactant provided both the colloidal stability and the fluorescence ability to determine the phase transition in zein NPs under the effect of temperature variation. Maintaining colloidal stability under the effect of temperature variation is an essential aspect of zein NPs applicability as a source of vegetarian protein supplement in different food suspensions. Different techniques such as fluorescence, DLS size, zeta potential, and FTIR measurements were applied to determine the influence of temperature on the colloidal stability of zein NPs. Zein NPs undergo phase transition well above room temperature while maintaining their size in nanometer range, and the phase transition temperature decreased with the amount of zein used in the synthesis of zein NPs. The results highlighted the potential use of zein NPs as a vegetarian supplement protein in different food products.


2006 ◽  
Vol 73 (14) ◽  
Author(s):  
J. D. Moore ◽  
G. K. Perkins ◽  
Y. Bugoslavsky ◽  
L. F. Cohen ◽  
M. K. Chattopadhyay ◽  
...  

2013 ◽  
Vol 24 (1) ◽  
pp. 017002 ◽  
Author(s):  
Alexandra Garraud ◽  
Evan Shorman ◽  
Ololade D Oniku ◽  
Bin Qi ◽  
David P Arnold

2016 ◽  
Vol 7 ◽  
pp. 126-137 ◽  
Author(s):  
Wen Yu ◽  
Frank Schramm ◽  
Eufemio Moreno Pineda ◽  
Yanhua Lan ◽  
Olaf Fuhr ◽  
...  

A series of 2,2’-bipyrimidine-bridged dinuclear lanthanide complexes with the general formula [Ln(tmhd)3]2bpm (tmhd = 2,2,6,6-tetramethyl-3,5-heptanedionate, bpm = 2,2’-bipyrimidine, Ln = Gd(III), 1; Tb(III), 2; Dy(III), 3; Ho(III), 4 and Er(III), 5) has been synthesized and characterized. Sublimation of [Tb(tmhd)3]2bpm onto a Au(111) surface leads to the formation of a homogeneous film with hexagonal pattern, which was studied by scanning tunneling microscopy (STM). The bulk magnetic properties of all complexes have been studied comprehensively. The dynamic magnetic behavior of the Dy(III) and Er(III) compounds clearly exhibits single molecule magnet (SMM) characteristics with an energy barrier of 97 and 25 K, respectively. Moreover, micro-SQUID measurements on single crystals confirm their SMM behavior with the presence of hysteresis loops.


2021 ◽  
Vol 540 ◽  
pp. 168445
Author(s):  
Shuli Sun ◽  
Rui Liu ◽  
Guiquan Yao ◽  
Zhaohui Chen ◽  
Qiang Wang ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document