Enhancing the Quantum Properties of Manganese-Lanthanide Single-Molecule Magnets: Observation of Quantum Tunneling Steps in the Hysteresis Loops of a {Mn12Gd} Cluster

2009 ◽  
Vol 121 (3) ◽  
pp. 529-532 ◽  
Author(s):  
Theocharis C. Stamatatos ◽  
Simon J. Teat ◽  
Wolfgang Wernsdorfer ◽  
George Christou
Keyword(s):  
Single Molecule ◽  
Quantum Tunneling ◽  
Hysteresis Loops ◽  
Single Molecule Magnets ◽  
Quantum Properties

Covalently Linked Dimer of Mn3 Single-Molecule Magnets and Retention of Its Structure and Quantum Properties in Solution

2015 ◽  
Vol 137 (22) ◽  
pp. 7160-7168 ◽  
Author(s):  
Tu N. Nguyen ◽  
Muhandis Shiddiq ◽  
Tuhin Ghosh ◽  
Khalil A. Abboud ◽  
Stephen Hill ◽  
...  
Keyword(s):  
Single Molecule ◽  
Single Molecule Magnets ◽  
Quantum Properties ◽  
Covalently Linked

Single-Molecule Magnets:  A Large Mn30Molecular Nanomagnet Exhibiting Quantum Tunneling of Magnetization

2004 ◽  
Vol 126 (7) ◽  
pp. 2156-2165 ◽  
Author(s):  
Monica Soler ◽  
Wolfgang Wernsdorfer ◽  
Kirsten Folting ◽  
Maren Pink ◽  
George Christou
Keyword(s):  
Single Molecule ◽  
Quantum Tunneling ◽  
Single Molecule Magnets ◽  
Quantum Tunneling Of Magnetization

Magnetic Exchange Effects in {CrIII2DyIII2} Single Molecule Magnets Containing Alcoholamine Ligands

2014 ◽  
Vol 67 (11) ◽  
pp. 1581 ◽  
Author(s):  
Stuart K. Langley ◽  
Daniel P. Wielechowski ◽  
Boujemaa Moubaraki ◽  
Brendan F. Abrahams ◽  
Keith S. Murray
Keyword(s):  
Single Molecule ◽  
Magnetic Hysteresis ◽  
Hysteresis Loops ◽  
Magnetic Studies ◽  
Single Molecule Magnets ◽  
Magnetic Exchange ◽  
Bridging Ligands ◽  
Metallic Core ◽  
Ligand Coordination ◽  
Magnetic Hysteresis Loops

The synthesis and magnetic characterisation of four new heterometallic {CrIII2DyIII2} complexes 2–5 are described. The present work follows on from a recently isolated complex [CrIII2DyIII2(OMe)2(O2CPh)4(mdea)2(NO3)2] (1) (mdeaH2 = N-methyldiethanolamine), which displayed impressive single molecule magnet (SMM) properties, notably highly coercive magnetic hysteresis loops below 3.5 K. Compounds 1–5 all display a planar butterfly type metallic core arrangement, with the DyIII ions occupying the central body positions and the CrIII ion the outer wing positions. The core is stabilized by the amine–diolate, and carboxylate bridging ligands. Variation of the amine–diolate ligand resulted in several structural analogues which maintain the same metallic core, but differ from the parent 1 in the outer ligand coordination environment. Magnetic studies reveal complexes 2–5 also display SMM behaviour, unambiguously confirmed via low temperature magnetic hysteresis loops, each displaying wide coercive fields, a rare occurrence for lanthanoid-based SMMs.

Molecular nanomagnets

2017 ◽  
Author(s):  
W. Wernsdorfer
Keyword(s):  
Molecular Electronics ◽  
Single Molecule ◽  
Quantum Dynamics ◽  
Spin Model ◽  
Photon Absorption ◽  
Single Molecule Magnets ◽  
Molecular Nanomagnets ◽  
Quantum Properties ◽  
Molecular Spintronics ◽  
Quantum Phenomena

This article describes the quantum phenomena observed in molecular nanomagnets. Molecular nanomagnets, or single-molecule magnets (SMMs), provides a fundamental link between spintronics and molecular electronics. SMMs combine the classic macroscale properties of a magnet with the quantum properties of a nanoscale entity. The resulting field, molecular spintronics, aims at manipulating spins and charges in electronic devices containing one or more molecules. This article first considers molecular nanomagnets and the giant spin model for nanomagnets before discussing the quantum dynamics of a dimer of nanomagnets, resonant photon absorption in Cr7Ni antiferromagnetic rings, and photon-assisted tunnelling in a single-molecule magnet. It also examines environmental decoherence effects in nanomagnets and concludes by highlighting the new trends towards molecular spintronics using junctions and nano-SQUIDs.

scholarly journals Studies of hysteresis and quantum tunnelling of the magnetisation in dysprosium(iii) single molecule magnets

2019 ◽  
Vol 48 (24) ◽  
pp. 8541-8545 ◽  
Author(s):  
Fabrizio Ortu ◽  
Daniel Reta ◽  
You-Song Ding ◽  
Conrad A. P. Goodwin ◽  
Matthew P. Gregson ◽  
...  
Keyword(s):  
Single Molecule ◽  
Quantum Tunneling ◽  
Single Molecule Magnets ◽  
Quantum Tunnelling

We report a study of quantum tunneling of the magnetisation in three Dy(iii) single-molecule magnets.

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