pH-controlled polymorphism in a layered dysprosium phosphonate and its impact on the magnetization relaxation

2015 ◽  
Vol 51 (13) ◽  
pp. 2649-2652 ◽  
Author(s):  
Dai Zeng ◽  
Min Ren ◽  
Song-Song Bao ◽  
Jian-Shen Feng ◽  
Li Li ◽  
...  
Keyword(s):  
Slow Relaxation ◽  
Energy Barriers ◽  
Magnetization Relaxation ◽  
Ph Controlled

This communication reports two polymorphic dysprosium compounds that exhibit slow relaxation of magnetization with significantly different energy barriers.

Dysprosium complexes bearing unsupported DyIII–GeII/SnIImetal–metal bonds as single-ion magnets

2019 ◽  
Vol 55 (57) ◽  
pp. 8250-8253 ◽  
Author(s):  
Shi-Ming Chen ◽  
Jin Xiong ◽  
Yi-Quan Zhang ◽  
Fang Ma ◽  
Hao-Ling Sun ◽  
...  
Keyword(s):  
Slow Relaxation ◽  
Blocking Temperature ◽  
Zero Field ◽  
Energy Barriers ◽  
Metal Metal ◽  
Metal Metal Bonds ◽  
Metal Bonds

We report here two dysprosium complexes bearing unsupported Dy–Ge/Sn metal–metal bonds which contain relatively large covalency. Both complexes can exhibit slow relaxation of magnetization at zero field with energy barriers of 485 and 620 K, respectively, and the blocking temperature of 6 K.

scholarly journals Increasing the effective energy barrier promoted by the change of a counteranion in a Zn–Dy–Zn SMM: slow relaxation via the second excited state

2015 ◽  
Vol 51 (62) ◽  
pp. 12353-12356 ◽  
Author(s):  
I. Oyarzabal ◽  
J. Ruiz ◽  
E. Ruiz ◽  
D. Aravena ◽  
J. M. Seco ◽  
...  
Keyword(s):  
Excited State ◽  
Energy Barrier ◽  
Slow Relaxation ◽  
Effective Energy ◽  
Magnetization Relaxation

Slow magnetization relaxation via the second excited state with a Ueff = 186 cm−1 has been observed in a Zn–Dy–Zn complex.

scholarly journals Tb-based silicate apatites showing slow magnetization relaxation with identical parameters for the Tb3+ and Dy3+ counter ions

RSC Advances ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 6926-6933
Author(s):  
Mikhail A. Zykin ◽  
Andrey K. Dyakonov ◽  
Artem A. Eliseev ◽  
Lev A. Trusov ◽  
Reinhard K. Kremer ◽  
...  
Keyword(s):  
Slow Relaxation ◽  
Magnetization Relaxation ◽  
Counter Ions ◽  
Apatite Type

Replacing Dy3+ with Tb3+ in the apatite-type silicate (Dy,Y)8Ca2(SiO4)6O2 preserves the character of the magnetization slow relaxation.

scholarly journals Dysprosium magnesium silicate apatite featuring field and temperature stable slow magnetization relaxation

RSC Advances ◽  
2020 ◽  
Vol 10 (62) ◽  
pp. 37588-37595
Author(s):  
Pavel E. Kazin ◽  
Mikhail A. Zykin ◽  
Lev A. Trusov ◽  
Alexander V. Vasiliev ◽  
Reinhard K. Kremer ◽  
...  
Keyword(s):  
Relaxation Times ◽  
Magnesium Silicate ◽  
Slow Relaxation ◽  
Magnetization Relaxation

The compound reveals dual magnetization relaxation with largely varying contributions from fast and slow relaxation paths controlled by field and temperature. The relaxation times retain values of a few seconds up to 40 K.

PHASE TRANSFORMATION AND SLOW RELAXATION IN FLUOSILICATES

1976 ◽  
Vol 37 (C6) ◽  
pp. C6-481-C6-481
Author(s):  
J. CHAPPERT ◽  
G. JEHANNO ◽  
F. VARRET
Keyword(s):  
Phase Transformation ◽  
Slow Relaxation

Calculation of the free energy barriers in the oligomerisation of Ab

10.2741/3104 ◽  
2008 ◽  
Vol Volume (13) ◽  
pp. 5614 ◽  
Author(s):  
Mookyung Cheon
Keyword(s):  
Free Energy ◽  
Energy Barriers

Slow Magnetization Relaxation in a 1-D Double-Chain Coordination Polymer Composed of {DyIII 4} Repeating Units

2013 ◽  
Vol 3 (2) ◽  
pp. 161-171 ◽  
Author(s):  
Dimitris Alexandropoulos ◽  
Chaoran Li ◽  
Catherine Raptopoulou ◽  
Vassilis Psycharis ◽  
Wolfgang Wernsdorfer ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Double Chain ◽  
Magnetization Relaxation
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