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Exploring the functional relation of magnetic density and magnetocaloric effect based on a dinuclear system
Author(s) -
Liu ZiYuan,
Huang XuKe,
Chen ZiLu,
Liu DongCheng,
Zou HuaHong,
Liang FuPei
Publication year - 2021
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.6325
Subject(s) - magnetic refrigeration , diamagnetism , chemistry , doping , density functional theory , metal , ligand (biochemistry) , crystallography , condensed matter physics , magnetic field , magnetization , computational chemistry , physics , organic chemistry , biochemistry , receptor , quantum mechanics
Molecular magnetic refrigerating material is a kind of green and environmentally friendly materials, which achieve the purpose of cooling by its magnetocaloric effect. Magnetic density is crucial to the magnetocaloric effect of the complexes, and it is usually described by the parameters of M w / N Gd or metal/ligand mass ratio, which represents the content of Gd (III) in the complexes. In order to establish the functional relation between these parameters and magnetocaloric effect, doping is a credible method without changing the coordination environment of the system, which is realized by the process of increasing Gd (III) gradually in the diamagnetic complex. Hence, a diamagnetic dinuclear Y 2 , four doped samples Gd 0.24 Y 1.76 , Gd 0.51 Y 1.49 , Gd 1.04 Y 0.96 , and Gd 1.46 Y 0.54 , and a pure dinuclear Gd 2 were synthesized and characterized. Through the measurement of magnetic properties and data fitting, the functional relations were obtained between these parameters and −Δ S m in this dinuclear system. It is the first time that the relationships are set up via experimental design, and it will contribute to observation and comprehension of how magnetic density affects the magnetocaloric effect. In addition, the −Δ S m of dinuclear Gd 2 is 29.96 J kg −1 K −1 , which is higher than most of the reported dinuclear Gd (III)‐based complexes.