A large magnetocaloric effect in two hybrid Gd-complexes: the synergy of inorganic and organic ligands towards excellent cryo-magnetic coolants

2019 ◽  
Vol 7 (21) ◽  
pp. 6352-6358 ◽  
Author(s):  
Jin-Hua Li ◽  
Ai-Ju Liu ◽  
Yu-Juan Ma ◽  
Song-De Han ◽  
Ji-Xiang Hu ◽  
...  
Keyword(s):  
Magnetocaloric Effect ◽  
Maximum Entropy ◽  
High Field ◽  
Organic Ligands ◽  
Gadolinium Gallium Garnet ◽  
Entropy Changes ◽  
Two Hybrid ◽  
Inorganic And Organic

We report two hybrid Gd-complexes with the maximum entropy changes comparable to commercialized gadolinium gallium garnet Gd3Ga5O12 at a high field (7 T) and low fields (smaller than 3 T).

An excellent cryogenic magnetic cooler: magnetic and magnetocaloric study of an inorganic frame material

2018 ◽  
Vol 2 (12) ◽  
pp. 2327-2332 ◽  
Author(s):  
Yue Han ◽  
Song-De Han ◽  
Jie Pan ◽  
Yu-Juan Ma ◽  
Guo-Ming Wang
Keyword(s):  
Crystal Structure ◽  
Magnetic Susceptibility ◽  
Maximum Entropy ◽  
High Field ◽  
Gadolinium Gallium Garnet ◽  
Isothermal Magnetization ◽  
Entropy Changes

We report the crystal structure, magnetic susceptibility and isothermal magnetization of inorganic frame material Gd(OH)SO4 (1). The maximum entropy changes for 1 at high field (7 T) and low fields (smaller than 3 T) were comparable to commercial gadolinium gallium garnet Gd3Ga5O12.

A new family of dinuclear lanthanide complexes exhibiting luminescence, magnetic entropy changes and single molecule magnet behaviors

CrystEngComm ◽  
2021 ◽  
Author(s):  
Lu Dong ◽  
Ying-Bing Lu ◽  
Shui-Dong Zhu ◽  
Jun-Wei Wu ◽  
Xin-Ting Zhang ◽  
...  
Keyword(s):  
Magnetocaloric Effect ◽  
Single Molecule ◽  
Lanthanide Complexes ◽  
Magnetic Entropy ◽  
Single Molecule Magnet ◽  
Entropy Changes ◽  
New Family

Four isomorphic and dinuclear lanthanide complexes were synthesized. Complexes EuIII and TbIII exhibit strong emissions, while GdIII shows the magnetocaloric effect and DyIII displays a single-molecule magnet.

Sorption of Cu on a Fe-deformed montmorillonite complex: Effect of pH, ionic strength, competitor heavy metal, and inorganic and organic ligands

2011 ◽  
Vol 52 (4) ◽  
pp. 339-344 ◽  
Author(s):  
Jun Zhu ◽  
Vincenza Cozzolino ◽  
Mariela Fernandez ◽  
Rosa M. Torres Sánchez ◽  
Massimo Pigna ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Ionic Strength ◽  
Organic Ligands ◽  
Effect Of Ph ◽  
Complex Effect ◽  
Inorganic And Organic

Evaluating the potential of inorganic and organic ligands to extract aluminium from an acidic soil using batch and leaching cells

Soil Research ◽  
1997 ◽  
Vol 35 (3) ◽  
pp. 539 ◽  
Author(s):  
C. J. Smith ◽  
J. A. E. Gibson ◽  
W. J. Bond
Keyword(s):  
Cation Exchange ◽  
Soil Solution ◽  
Organic Ligands ◽  
Solution Phase ◽  
Batch Experiments ◽  
Dihydroxybenzoic Acid ◽  
Moisture Contents ◽  
Exchangeable Al ◽  
Red Earth ◽  
Inorganic And Organic

Batch and leaching cell approaches were used to study the effect of a range of inorganic and organic ligands on the distribution of aluminium (Al) between the exchangeable and solution phase and to assess the ability of the ligands to mobilise aluminium in an acidic red earth (Calcic Rhodoxeralf). Anions were chosen to represent a range of potential abilities to form complexes with Al. They included chloride, fluoride, citrate, salicylate, 2,3-dihydroxybenzoic acid, catechol, and 2 different coal-derived fulvates. Batch experiments, using a 1 : 5 soil : solution ratio, showed that citrate, 2,3-dihydroxybenzoic acid, and fluoride had a similar effect on Al sorption and speciation. These anions were effective in decreasing the amount of exchangeable and sorbed Al and increased the amount of complexed Al in solution. In the soil solution, very little Al was in the uncomplexed toxic form (Al3+). Results from the batch experiments may not necessarily give a good indication of the behaviour of Al in the soil at realistic moisture contents. Therefore, those anions that showed the best capacity to remove exchangeable Al and decrease the concentration of toxic Al3+ in the solution were used in leaching cell experiments. These results showed that citrate, 2,3-dihydroxybenzoic acid, and the coal-derived fulvates can significantly decrease exchangeable Al, citrate being the most effective. Citrate and 2,3-dihydroxybenzoic acid resulted in significant amounts of Al being leached from the soil, whereas fluoride and the fulvates resulted in only slightly more Al leaching than chloride. Although the fulvates can remove some of the exchangeable Al, it was not leached from the soil. Both the batch and leaching cell techniques do allow the screening of compounds to decrease the concentration of toxic Al3+on the cation exchange complex of the soil.

High-field phase diagram of Ni3V2O8 studied by specific heat and magnetocaloric effect measurements

2021 ◽  
Author(s):  
Chao Dong ◽  
Yoshimitsu Kohama ◽  
Zhangzhen He ◽  
Kazuki Sato ◽  
Akira Matsuo ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Specific Heat ◽  
Magnetocaloric Effect ◽  
High Field ◽  
Field Phase
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