Switchable slow relaxation of magnetization in the native low temperature phase of a cooperative spin-crossover compound

Urtizberea, Ainhoa; Roubeau, Olivier

doi:10.1039/c6sc04737h

Cited by 42 publications

(25 citation statements)

References 44 publications

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“…Therefore, despite the vast number of SCO and SMM materials reported to date, 20 – 22 compounds exhibiting both bistabilities are very limited. 23 – 29 To achieve the high spin (HS) state preferred for SMM materials, light irradiation to the metastable HS state and partial SCO with HS fractions trapped at low temperature are two successful strategies, leading to several interesting photo-switchable SMM materials. 23 – 26 Nevertheless, reversible on–off switching of both SCO and SMM in one single crystal triggered by a SC–SC transformation remains unknown.…”

Section: Introductionmentioning

confidence: 99%

Reversible on–off switching of both spin crossover and single-molecule magnet behaviours via a crystal-to-crystal transformation

et al. 2018

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Section: Introductionmentioning

confidence: 99%

Reversible on–off switching of both spin crossover and single-molecule magnet behaviours via a crystal-to-crystal transformation

et al. 2018

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“…In the last year, two publications have called attention to this topic. 20 Roubeau and co-workers report the photo switch of SMM properties on a spin crossover complex 21 while Gao, Wang and co-workers reported the thermostability and photoluminescence of Dy(III) single-molecule magnets under a magnetic field. 22 THe R groups of the iminie ligand, naphtol and a diphenyl-azo derivative were chosen for the stability they provide to the Schiff base ligand and the photoluminescent properties they add to the complex.…”

Section: Introductionmentioning

confidence: 99%

Double-decker luminescent ytterbium and erbium SMMs with symmetric and asymmetric Schiff base ligands

2017

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Multifunctional molecules, that respond both to magnetic fields and light are object of study due to possible applications in fields as diverse as imaging or information processing and storage. In this paper we report visible and NIR emitting single-molecule magnets (SMMs) of Yb(III) and Er(III) with symmetric (SYML) and asymmetric (AZOL) Schiff base ligands.The complexes prepared SYML-Ln2, AZOL-Ln3 (Ln = Er, Yb) are SMMs, with the exception of AZOL-Yb3, with a relaxation behavior dominated by quantum tunneling of the magnetization. The multi-level double-decker structure of the complexes is ideal for surface deposition in carbon-based materials.

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“…light, pressure or potential bias). [38][39][40][41] We show that by matrix embedding, an MNM can be tuned to a regime where slight structural changes lead to drastic changes of the anisotropy from easy-plane to easy-axis type. It is tempting to propose magnetic materials in which the magnetic properties can be switched by temperature or pressure beyond the range that has been demonstrated.…”

mentioning

confidence: 93%

Controlling Molecular Nanomagnet Properties by the Host Lattice

Nehrkorn

Valuev

Bogomyakov

et al. 2020

Preprint

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Structural control over the magnetic properties of molecular nanomagnets (MNM) is key to bottom up design strategies for novel molecule-based magnetic materials, for e.g. data storage, magnetic cooling or spintronics. Herein, we switch the magnetism of materials made of the single-molecule magnet [CoxZn(1 x)(piv)2(2 NH2 Py)2], by structural changes induced by gradual replacement of complexes containing paramagnetic Co(II) with analogues containing diamagnetic Zn(II). Combining advanced structural and magnetic characterization techniques, we show that a change of the ratio of the two ions induces a change of the Co(II) coordination structure, changed magnetic relaxation times and a switch from easy-plane to easy-axis type magnetic anisotropy. Complementary quantum chemical calculations reveal magneto structural correlations, rationalizing the structural origin of the changed magnetic properties upon magnetic dilution. This approach provides an important new lever to understand, predict and tune the magnetic properties of a large range of MNM based magnetic materials.

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Switchable slow relaxation of magnetization in the native low temperature phase of a cooperative spin-crossover compound

Cited by 42 publications

References 44 publications

Reversible on–off switching of both spin crossover and single-molecule magnet behaviours via a crystal-to-crystal transformation

Reversible on–off switching of both spin crossover and single-molecule magnet behaviours via a crystal-to-crystal transformation

Double-decker luminescent ytterbium and erbium SMMs with symmetric and asymmetric Schiff base ligands

Controlling Molecular Nanomagnet Properties by the Host Lattice

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