scholarly journals Hexanuclear [Cp*Dy]6 single-molecule magnet

2020 ◽  
Vol 56 (27) ◽  
pp. 3887-3890 ◽  
Author(s):  
Jianfeng Wu ◽  
Serhiy Demeshko ◽  
Sebastian Dechert ◽  
Franc Meyer
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
Magnetic Relaxation ◽  
Hysteresis Loops ◽  
High Energy ◽  
Single Molecule Magnet ◽  
High Energy Barrier

A hexanuclear cluster containing six {Cp*Dy} units shows a high energy barrier (Ueff = 561 K) for magnetic relaxation and butterfly-shaped hysteresis loops up to 4.5 K.

Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: a Dy2 single molecule magnet with a high energy barrier

2021 ◽  
Author(s):  
Matilde Fondo ◽  
Julio Corredoira-Vázquez ◽  
Ana M. Garcia-Deibe ◽  
Jesus Sanmartin Matalobos ◽  
Silvia Gómez-Coca ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Single Molecule ◽  
Energy Barrier ◽  
Magnetic Relaxation ◽  
High Energy ◽  
Single Molecule Magnet ◽  
High Energy Barrier ◽  
Slow Magnetic Relaxation

Dinuclear [M(H3L1,2,4)]2 (M = Dy, Dy2; M = Ho, Ho2) complexes were isolated from an heptadentate aminophenol ligand. The crystal structures of Dy2·2THF, and the pyridine adducts Dy2·2Py and Ho2·2Py,...

Multiple magnetic relaxation processes, magnetocaloric effect and fluorescence properties of rhombus-shaped tetranuclear rare earth complexes

2016 ◽  
Vol 45 (1) ◽  
pp. 253-264 ◽  
Author(s):  
Hong-Ling Gao ◽  
Li Jiang ◽  
Shuang Liu ◽  
Hai-Yun Shen ◽  
Wen-Min Wang ◽  
...  
Keyword(s):  
Rare Earth ◽  
Magnetocaloric Effect ◽  
Single Molecule ◽  
Energy Barrier ◽  
Magnetic Relaxation ◽  
High Energy ◽  
Rare Earth Complexes ◽  
Relaxation Processes ◽  
Single Molecule Magnet ◽  
High Energy Barrier

A multi-relaxation single-molecule magnet (SMM) of a {Dy4} complex exhibits two distinct relaxation processes, with a high energy barrier of 121 K.

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.

“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

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

2017 ◽  
Vol 56 (43) ◽  
pp. 13416-13420 ◽  
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

Pentametallic lanthanide-alkoxide square-based pyramids: high energy barrier for thermal relaxation in a holmium single molecule magnet

2011 ◽  
Vol 47 (38) ◽  
pp. 10587 ◽  
Author(s):  
Robin J. Blagg ◽  
Floriana Tuna ◽  
Eric J. L. McInnes ◽  
Richard E. P. Winpenny
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
Thermal Relaxation ◽  
High Energy ◽  
Single Molecule Magnet ◽  
High Energy Barrier

Polyoxometalate-Supported Lanthanoid Single-Molecule Magnets

2014 ◽  
Vol 67 (11) ◽  
pp. 1542 ◽  
Author(s):  
Michele Vonci ◽  
Colette Boskovic
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
Magnetic Relaxation ◽  
Donor Ligands ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet ◽  
Coordination Numbers ◽  
Oxygen Donor ◽  
Slow Magnetic Relaxation

Polyoxometalates are robust and versatile multidentate oxygen-donor ligands, eminently suitable for coordination to trivalent lanthanoid ions. To date, 10 very different structural families of such complexes have been found to exhibit slow magnetic relaxation due to single-molecule magnet (SMM) behaviour associated with the lanthanoid ions. These families encompass complexes with between one and four of the later lanthanoid ions: Tb, Dy, Ho, Er, and Yb. The lanthanoid coordination numbers vary between six and eleven and a range of coordination geometries are evident. The highest energy barrier to magnetisation reversal measured to date for a lanthanoid–polyoxometalate SMM is Ueff/kB = 73 K for the heterodinuclear Dy–Eu compound (Bu4N)8H4[DyEu(OH)2(γ-SiW10O36)2].

scholarly journals Single-molecule magnet behavior in 2,2’-bipyrimidine-bridged dilanthanide complexes

2016 ◽  
Vol 7 ◽  
pp. 126-137 ◽  
Author(s):  
Wen Yu ◽  
Frank Schramm ◽  
Eufemio Moreno Pineda ◽  
Yanhua Lan ◽  
Olaf Fuhr ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Single Molecule ◽  
Energy Barrier ◽  
Lanthanide Complexes ◽  
Hysteresis Loops ◽  
Magnetic Behavior ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Single Molecule Magnet ◽  
Homogeneous Film

A series of 2,2’-bipyrimidine-bridged dinuclear lanthanide complexes with the general formula [Ln(tmhd)3]2bpm (tmhd = 2,2,6,6-tetramethyl-3,5-heptanedionate, bpm = 2,2’-bipyrimidine, Ln = Gd(III), 1; Tb(III), 2; Dy(III), 3; Ho(III), 4 and Er(III), 5) has been synthesized and characterized. Sublimation of [Tb(tmhd)3]2bpm onto a Au(111) surface leads to the formation of a homogeneous film with hexagonal pattern, which was studied by scanning tunneling microscopy (STM). The bulk magnetic properties of all complexes have been studied comprehensively. The dynamic magnetic behavior of the Dy(III) and Er(III) compounds clearly exhibits single molecule magnet (SMM) characteristics with an energy barrier of 97 and 25 K, respectively. Moreover, micro-SQUID measurements on single crystals confirm their SMM behavior with the presence of hysteresis loops.

A linear trinuclear ferrous single molecule magnet

2018 ◽  
Vol 47 (46) ◽  
pp. 16704-16708
Author(s):  
Shihao Liu ◽  
Yi-Fei Deng ◽  
Chang'An Li ◽  
Xiaoyong Chang ◽  
Yuan-Zhu Zhang
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
Magnetic Hysteresis ◽  
Hysteresis Loops ◽  
Effective Energy ◽  
Single Molecule Magnet ◽  
Magnetic Hysteresis Loops

A linear trinuclear ferrous [FeII3] SMM exhibited clear magnetic hysteresis loops and a significant higher effective energy barrier in comparison with its cobalt(ii) analogue.

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