Lantern-shaped 3d–4f high-nuclearity clusters with magnetocaloric effect

2017 ◽  
Vol 46 (30) ◽  
pp. 9745-9749 ◽  
Author(s):  
Qingfang Lin ◽  
Jing Li ◽  
Yayu Dong ◽  
Guangpeng Zhou ◽  
You Song ◽  
...  
Keyword(s):  
Magnetocaloric Effect ◽  
Isonicotinic Acid ◽  
Iminodiacetic Acid ◽  
Magnetic Studies ◽  
Solvothermal Conditions

Two lantern-shaped, high-nuclearity 3d–4f clusters were synthesized by using iminodiacetic acid (IDA) and isonicotinic acid (HIN) as the co-ligand under solvothermal conditions. Magnetic studies show a large magnetocaloric effect (MCE) for the gadolinium analogue.

Structures, fluorescence properties and magnetic properties of a series of rhombus-shaped LnIII4 clusters: magnetocaloric effect and single-molecule-magnet behavior

2019 ◽  
Vol 43 (33) ◽  
pp. 12941-12949 ◽  
Author(s):  
Wen-Min Wang ◽  
Li Zhang ◽  
Xian-Zhen Li ◽  
Li-Yuan He ◽  
Xin-Xin Wang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetocaloric Effect ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Magnetic Refrigeration ◽  
Fluorescence Properties ◽  
Relaxation Processes ◽  
Magnetic Studies ◽  
Single Molecule Magnet ◽  
Slow Magnetic Relaxation

A family LnIII4 clusters were successfully synthesized and structurally characterized. Magnetic studies show that Gd4 cluster displays magnetic refrigeration, while Dy4 cluster demonstrates two distinct slow magnetic relaxation processes.

Mn(II)2Gd(III)3 Phosphonate as a Molecular Refrigerant

2015 ◽  
Vol 68 (12) ◽  
pp. 1926 ◽  
Author(s):  
Xiaoyan Tang ◽  
Ye Xu ◽  
Wenpeng Ye ◽  
Yan Tang ◽  
Yunsheng Ma ◽  
...  
Keyword(s):  
Magnetocaloric Effect ◽  
Phosphonic Acid ◽  
Planar Structure ◽  
Magnetic Studies ◽  
Tert Butyl ◽  
Potential Applications ◽  
Pentanuclear Cluster

3d-Gd phosphonate clusters are attractive for their potential applications as magnetic coolers. A new pentanuclear cluster [Mn(II)2Gd(III)3(OH)(dtbmfPO3)2(tBuCO2)8(HO2CtBu)(H2O)2]·HO2CtBu·CH3CN (1) (dtbmfPO3H2 = (2,7-di-tert-butyl-9-methyl-9H-fluoren-9-yl)phosphonic acid) has been synthesised and characterised. The cluster has a planar structure in which the trinuclear {MnGd2(OH)} and dinuclear {MnGdO2} units are joined together by two phosphonate groups. The magnetic studies reveal that 1 shows antiferromagnetic interactions and a large magnetocaloric effect (ΔS = 20.9 J kg–1 K–1 at ΔH = 7 T).

A series of [2 × 2] square grid LnIII4 clusters: a large magnetocaloric effect and single-molecule-magnet behavior

2019 ◽  
Vol 43 (19) ◽  
pp. 7419-7426 ◽  
Author(s):  
Wen-Min Wang ◽  
Xian-Zhen Li ◽  
Li Zhang ◽  
Jia-Li Chen ◽  
Jun-Hua Wang ◽  
...  
Keyword(s):  
Schiff Base ◽  
Magnetocaloric Effect ◽  
Single Molecule ◽  
Schiff Base Ligand ◽  
Relaxation Behavior ◽  
Slow Relaxation ◽  
Magnetic Studies ◽  
Single Molecule Magnet ◽  
Square Grid

Four new [2 × 2] square grid LnIII4 clusters were successfully synthesized by employing a multidentate chelating Schiff base ligand. Magnetic studies showed that cluster 1 displays a larger magnetocaloric effect (−ΔSm = 34.46 J kg−1 K−1 for ΔH = 7.0 T at 2.0 K), while 3 exhibits slow relaxation behavior under a zero dc field, with ΔE/kB of 42.76 K and τ0 of 1.02 × 10−6 s.

scholarly journals A pseudo-icosahedral cage {Gd12} based on aminomethylphosphonate

2016 ◽  
Vol 45 (22) ◽  
pp. 9041-9044 ◽  
Author(s):  
Ze-Min Zhang ◽  
Karzan H. Zangana ◽  
Andreas K. Kostopoulos ◽  
Ming-Liang Tong ◽  
Richard E. P. Winpenny
Keyword(s):  
Magnetocaloric Effect ◽  
Phosphonic Acid ◽  
Solvothermal Conditions ◽  
Aminomethyl Phosphonic Acid

Reaction of (aminomethyl)phosphonic acid (ampH2) with a mixture of gadolinium and cobalt pivalates under solvothermal conditions, led to a pseudo-icosahedral cage {Gd12}, which shows a large magnetocaloric effect (MCE).

A two dimensional Gd III coordination polymer based on isonicotinic acid N‐oxide with large magnetocaloric effect

2021 ◽  
Author(s):  
Dong‐Qing Wu ◽  
Ming‐Liang Zhang ◽  
Zhong‐Yi Li ◽  
Ping‐Ping Zhang ◽  
Meng‐Ying Zhang ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Magnetocaloric Effect ◽  
Isonicotinic Acid ◽  
Two Dimensional

Self-assembly of rare octanuclear quad(double-stranded) cluster helicates showing slow magnetic relaxation and the magnetocaloric effect

2018 ◽  
Vol 42 (21) ◽  
pp. 17652-17658 ◽  
Author(s):  
Min-Xia Yao ◽  
Li-Zheng Cai ◽  
Xiao-Wei Deng ◽  
Wei Zhang ◽  
Sui-Jun Liu ◽  
...  
Keyword(s):  
Magnetocaloric Effect ◽  
Self Assembly ◽  
Magnetic Relaxation ◽  
Magnetic Studies ◽  
Slow Magnetic Relaxation

Four rare structurally novel octanuclear quad(double-strands) cluster helicates containing Ln8 polyhedron cores have been synthesized. Magnetic studies show that the Gd derivative exhibits the magnetocaloric effect and the Dy derivative shows slow magnetic relaxation under zero dc field.

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