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 A dichlorido-bridged dinuclear Dy(iii) single-molecule magnet with an effective energy barrier larger than 600 K

2019 ◽  
Vol 55 (55) ◽  
pp. 7930-7933 ◽  
Author(s):  
Tian Han ◽  
You-Song Ding ◽  
Zi-Han Li ◽  
Ke-Xin Yu ◽  
Yuan-Qi Zhai ◽  
...  
Keyword(s):  
Single Molecule ◽  
Magnetization Reversal ◽  
Energy Barrier ◽  
Large Energy ◽  
Effective Energy ◽  
Single Molecule Magnet

A large energy barrier for magnetization reversal of about 623 K is observed in a dichlorido-bridged Dy(iii) dimer.

scholarly journals Theoretical research on excited-state intramolecular proton coupled charge transfer modulated by molecular structure

RSC Advances ◽  
2018 ◽  
Vol 8 (52) ◽  
pp. 29662-29669
Author(s):  
Dapeng Yang ◽  
Guang Yang ◽  
Min Jia ◽  
Xiaoyan Song ◽  
Qiaoli Zhang ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Excited State ◽  
Charge Transfer ◽  
Energy Barrier ◽  
Theoretical Research ◽  
Small Energy

Charge transfer from O1 to O2 of 3HFN results in proton H1 transfer from O1 to O2 in S1 state, while small energy barrier facilitates proton H1 transfer from O1 to N1 in S1 state of diCN-HBO, which results in charge transfer from O1 to di-cyano.

scholarly journals A Co-based single-molecule magnet confined in a barium phosphate apatite matrix with a high energy barrier for magnetization relaxation

2017 ◽  
Vol 53 (39) ◽  
pp. 5416-5419 ◽  
Author(s):  
Pavel E. Kazin ◽  
Mikhail A. Zykin ◽  
Lev A. Trusov ◽  
Artem A. Eliseev ◽  
Oxana V. Magdysyuk ◽  
...  
Keyword(s):  
High Spin ◽  
Single Molecule ◽  
Energy Barrier ◽  
High Energy ◽  
Magnetization Relaxation ◽  
Single Molecule Magnet ◽  
High Energy Barrier ◽  
Spin Reversal ◽  
Type Lattice ◽  
Apatite Type

A Co-ion introduced into the trigonal channel of an apatite-type lattice forms a magnetically anisotropic two-coordinated Co-complex with a record-high spin-reversal energy barrier.

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.

“Isolated” DyO+ Embedded in a Ceramic Apatite Matrix Featuring Single-Molecule Magnet Behavior with a High Energy Barrier for Magnetization Relaxation

2017 ◽  
Vol 129 (43) ◽  
pp. 13601-13605 ◽  
Author(s):  
Pavel E. Kazin ◽  
Mikhail A. Zykin ◽  
Valentina V. Utochnikova ◽  
Oxana V. Magdysyuk ◽  
Alexander V. Vasiliev ◽  
...  
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
High Energy ◽  
Magnetization Relaxation ◽  
Single Molecule Magnet ◽  
High Energy Barrier

scholarly journals Polymeric Terbium(III) Squarate Hydrate as a Luminescent Magnet

Crystals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1221
Author(s):  
Rina Takano ◽  
Takayuki Ishida
Keyword(s):  
Energy Barrier ◽  
Room Temperature ◽  
Green Light ◽  
Squaric Acid ◽  
Dimensional Structure ◽  
Two Dimensional ◽  
Effective Energy ◽  
Solid Complex ◽  
Coordination Polyhedra ◽  
Molecular Arrangement

Polymeric terbium(III) squarate hydrate [{Tb2(C4O4)3(H2O)8}n] was prepared from TbCl3 or Tb2O3 and squaric acid. The crystal structure was determined in a monoclinic Pc space group, and the whole molecular arrangement gives a sandwiched two-dimensional structure. The coordination polyhedra are described as a square antiprism. The solid complex emits green light under UV irradiation at room temperature with the quantum yield of 25%. Although Tb3+ is a non-Kramers ion, the alternating-current magnetic susceptibility showed frequency dependence in a 2000-Oe DC field, and the effective energy barrier for magnetization reorientation was 33(2) K. Thus, [{Tb2(C4O4)3(H2O)8}n] displayed functions of a potential luminescent magnet.

Fine tuning of magnetization relaxation parameters of the DyO+ single ion magnet in a hydroxy/fluoro-apatite solid solution

CrystEngComm ◽  
2019 ◽  
Vol 21 (1) ◽  
pp. 102-107 ◽  
Author(s):  
Pavel E. Kazin ◽  
Mikhail A. Zykin ◽  
Lev A. Trusov ◽  
Alexander V. Vasiliev ◽  
Irina V. Kolesnik ◽  
...  
Keyword(s):  
Solid Solution ◽  
Magnetization Reversal ◽  
Quantum Tunneling ◽  
Energy Barrier ◽  
Fine Tuning ◽  
Magnetization Relaxation ◽  
Quantum Tunneling Of Magnetization ◽  
Relaxation Parameters

Variation of the crystal environment of DyO+ regulates the energy barrier for magnetization reversal and the rate of quantum tunneling of magnetization.

A remarkable energy barrier for spin reversal in a field induced dinuclear ytterbium single molecule magnet

2021 ◽  
Vol 50 (39) ◽  
pp. 13666-13670
Author(s):  
Arpan Mondal ◽  
Sanjit Konar
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
Slow Relaxation ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet ◽  
Crystal Fields ◽  
Spin Reversal

Strong equatorial and weak axial crystal fields enhance the energy barrier for slow relaxation of magnetization in Yb-based single molecule magnets.

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