Direct measurement of dysprosium(III)˙˙˙dysprosium(III) interactions in a single-molecule magnet

Moreno‐Pineda, Eufemio; Chilton, Nicholas F.; Marx, Raphael; Dörfel, María; Sells, Daniel O.; Neugebauer, Petr; Jiang, Shang‐Da; Collison, David; Slageren, Joris van; McInnes, Eric J. L.; Winpenny, Richard E. P.

doi:10.1038/ncomms6243

Cited by 226 publications

(139 citation statements)

References 37 publications

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“…This low-temperature increase in the χT product for both complexes is indicative of the presence of dominant ferromagnetic interactions between spin carriers. This type of low-temperature ferromagnetic interaction has been previously observed for Dy 3+ binuclear complexes 17,53,54. Because of the close contacts between spin carriers with the intra-…”

mentioning

confidence: 80%

Supramolecular Assembly of Molecular Rare-Earth–3,5-Dichlorobenzoic Acid–2,2′:6′,2″-Terpyridine Materials: Structural Systematics, Luminescence Properties, and Magnetic Behavior

et al. 2016

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The syntheses and crystal structures of 16 new rare-earth (RE = La(3+)-Y(3+))-3,5-dichlorobenzoic acid-terpyridine molecular materials characterized via single-crystal and powder X-ray diffraction are reported. These 16 complexes consist of four unique structure types ranging from molecular dimers (La(3+) and Ce(3+)) to tetramers (Pr(3+)-Y(3+)) as one moves across the RE(3+) series. This structural evolution is accompanied by subsequent changes in modes of supramolecular assembly (halogen bonding, halogen-π, halogen-halogen, and π-π interactions). Solid-state visible and near-infrared lifetime measurements were performed on complexes 6 (Sm(3+)), 7 (Eu(3+)), 9 (Tb(3+)), 10 (Dy(3+)), 11 (Ho(3+)), 12 (Er(3+)), and 14 (Yb(3+)), and characteristic emission was observed for all complexes except 11. Lifetime data for 11, 12, and 14 suggest sensitization by the terpy antenna does occur in near-infrared systems, although not as efficiently as in the visible region. Additionally, direct current magnetic susceptibility measurements were taken for complexes 10 (Dy(3+)) and 12 (Er(3+)) and showed dominant ferromagnetic behavior.

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confidence: 80%

Supramolecular Assembly of Molecular Rare-Earth–3,5-Dichlorobenzoic Acid–2,2′:6′,2″-Terpyridine Materials: Structural Systematics, Luminescence Properties, and Magnetic Behavior

et al. 2016

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“…3 Investigation of the magnetism of lanthanide complexes arose from the discovery that monometallic complexes of 4f ions can also show slow relaxation of magnetization; the most studied compounds are the double-decker phthalocyaninato−lanthanide complexes. 4 These molecules opened up a new era for singlemolecule magnets (SMMs), 5 where the observed behavior was due to the large magnetic moments and inherent anisotropy of lanthanide ions. 6 Lanthanides have shown higher energy barriers than observed for transition metal ions, for example, [Tb III (Pc) 2 ] is an SMM consisting of a single ion with a barrier of 938 K, 7 while a value of 842 K was obtained for Dy(III) doped in [Y III 4 K 2 O(O t Bu) 12 ].…”

Section: ■ Introductionmentioning

confidence: 99%

Systematic Study of a Family of Butterfly-Like {M₂Ln₂} Molecular Magnets (M = Mg^II, Mn^III, Co^II, Ni^II, and Cu^II; Ln = Y^III, Gd^III, Tb^III, Dy^III, Ho^III, and Er^III)

et al. 2015

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A family of 3d-4f [M(II)2Ln(III)2(μ3-OH)2(O2C(t)Bu)10](2-) "butterflies" (where M(II) = Mg, Co, Ni, and Cu; Ln(III) = Y, Gd, Tb, Dy, Ho, and Er) and [Mn(III)2Ln(III)2(μ3-O)2(O2C(t)Bu)10](2-) molecules (where Ln(III) = Y, Gd, Tb, Dy, Ho, and Er) has been synthesized and characterized through single-crystal X-ray diffraction, SQUID magnetometry, and ab initio calculations. All dysprosium- and some erbium-containing tetramers showed frequency-dependent maxima in the out-of-phase component of the susceptibility associated with slow relaxation of magnetization, and hence, they are single-molecule magnets (SMMs). AC susceptibility measurements have shown that the SMM behavior is entirely intrinsic to the Dy and Er sites and the magnitude of the energy barrier is influenced by the interactions between the 4f and the 3d metal. A trend is observed between the strength of the 3d-4f exchange interaction between and the maximum observed in the χ″M(T).

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“…The degenerate J -state is split by a crystal field (CF), and the ground-state quantum spin can be represented by a modified J , the so-called pseudospin, as discussed in lanthanide-based molecular magnets171819202122. The strong 4 f SOC combined with a subtle CF contributes strong magnetic anisotropy to yield a simple model Hamiltonian with Ising-like or XY-like anisotropic magnetic exchange between the molecular pseudospins.…”

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confidence: 99%

Spin–orbit coupled molecular quantum magnetism realized in inorganic solid

Park

Choi

et al. 2016

Nat Commun

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Molecular quantum magnetism involving an isolated spin state is of particular interest due to the characteristic quantum phenomena underlying spin qubits or molecular spintronics for quantum information devices, as demonstrated in magnetic metal–organic molecular systems, the so-called molecular magnets. Here we report the molecular quantum magnetism realized in an inorganic solid Ba3Yb2Zn5O11 with spin–orbit coupled pseudospin-½ Yb3+ ions. The magnetization represents the magnetic quantum values of an isolated Yb4 tetrahedron with a total (pseudo)spin 0, 1 and 2. Inelastic neutron scattering results reveal that a large Dzyaloshinsky–Moriya interaction originating from strong spin–orbit coupling of Yb 4f is a key ingredient to explain magnetic excitations of the molecular magnet states. The Dzyaloshinsky–Moriya interaction allows a non-adiabatic quantum transition between avoided crossing energy levels, and also results in unexpected magnetic behaviours in conventional molecular magnets.

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Direct measurement of dysprosium(III)˙˙˙dysprosium(III) interactions in a single-molecule magnet

Cited by 226 publications

References 37 publications

Supramolecular Assembly of Molecular Rare-Earth–3,5-Dichlorobenzoic Acid–2,2′:6′,2″-Terpyridine Materials: Structural Systematics, Luminescence Properties, and Magnetic Behavior

Supramolecular Assembly of Molecular Rare-Earth–3,5-Dichlorobenzoic Acid–2,2′:6′,2″-Terpyridine Materials: Structural Systematics, Luminescence Properties, and Magnetic Behavior

Systematic Study of a Family of Butterfly-Like {M₂Ln₂} Molecular Magnets (M = Mg^II, Mn^III, Co^II, Ni^II, and Cu^II; Ln = Y^III, Gd^III, Tb^III, Dy^III, Ho^III, and Er^III)

Spin–orbit coupled molecular quantum magnetism realized in inorganic solid

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Direct measurement of dysprosium(III)˙˙˙dysprosium(III) interactions in a single-molecule magnet

Cited by 226 publications

References 37 publications

Supramolecular Assembly of Molecular Rare-Earth–3,5-Dichlorobenzoic Acid–2,2′:6′,2″-Terpyridine Materials: Structural Systematics, Luminescence Properties, and Magnetic Behavior

Supramolecular Assembly of Molecular Rare-Earth–3,5-Dichlorobenzoic Acid–2,2′:6′,2″-Terpyridine Materials: Structural Systematics, Luminescence Properties, and Magnetic Behavior

Systematic Study of a Family of Butterfly-Like {M2Ln2} Molecular Magnets (M = MgII, MnIII, CoII, NiII, and CuII; Ln = YIII, GdIII, TbIII, DyIII, HoIII, and ErIII)

Spin–orbit coupled molecular quantum magnetism realized in inorganic solid

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Systematic Study of a Family of Butterfly-Like {M₂Ln₂} Molecular Magnets (M = Mg^II, Mn^III, Co^II, Ni^II, and Cu^II; Ln = Y^III, Gd^III, Tb^III, Dy^III, Ho^III, and Er^III)