http://www.cnr.it/ontology/cnr/individuo/prodotto/ID57522

Spin canting in a Dy-based single-chain magnet with dominant next-nearest-neighbor antiferromagnetic interactions (Articolo in rivista)

Type

Articolo in rivista (Classe)
Prodotto della ricerca (Classe)

Label

Spin canting in a Dy-based single-chain magnet with dominant next-nearest-neighbor antiferromagnetic interactions (Articolo in rivista) (literal)

Anno

2009-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1103/PhysRevB.79.134419 (literal)

Alternative label

K. Bernot; J. Luzon; A. Caneschi; D. Gatteschi; R. Sessoli; L. Bogani; A. Vindigni; A. Rettori; M. G. Pini (2009)
Spin canting in a Dy-based single-chain magnet with dominant next-nearest-neighbor antiferromagnetic interactions
in Physical review. B, Condensed matter and materials physics; American Physical Society (APS), College Pk (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

K. Bernot; J. Luzon; A. Caneschi; D. Gatteschi; R. Sessoli; L. Bogani; A. Vindigni; A. Rettori; M. G. Pini (literal)

Pagina inizio

134419 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://link.aps.org/doi/10.1103/PhysRevB.79.134419 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

79 (literal)

Rivista

Physical review. B, Condensed matter and materials physics (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

doi:10.1103/PhysRevB.79.134419 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

11 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

13 (literal)

Note

ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

1) SCR/MI-INSA Laboratory, INSA-Rennes, CS 14315, F-35043 Rennes, France 2) Dipartimento di Chimica, and INSTM (UdR Firenze), Università degli Studi di Firenze, I-50019 Sesto Fiorentino (FI), Italy 3) 1. Physikalisches Institut, Universität Stuttgart, 70550 Stuttgart, Germany 4) Laboratorium für Festkörperphysik, ETH Zürich, CH-8093 Zürich, Switzerland 5) Dipartimento di Fisica, Università degli Studi di Firenze, I-50019 Sesto Fiorentino (FI), Italy 6) Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, I-50019 Sesto Fiorentino (FI), Italy (literal)

Titolo

Spin canting in a Dy-based single-chain magnet with dominant next-nearest-neighbor antiferromagnetic interactions (literal)

Abstract

We investigate theoretically and experimentally the static magnetic properties of single crystals of the molecular-based single-chain magnet of formula [Dy(hfac)3NIT(C6H4OPh)]infinity comprising alternating Dy3+ and organic radicals. The magnetic molar susceptibility chiM displays a strong angular variation for sample rotations around two directions perpendicular to the chain axis. A peculiar inversion between maxima and minima in the angular dependence of chiM occurs on increasing temperature. Using information regarding the monomeric building block as well as an ab initio estimation of the magnetic anisotropy of the Dy3+ ion, this \"anisotropy-inversion\" phenomenon can be assigned to weak one-dimensional ferromagnetism along the chain axis. This indicates that antiferromagnetic next-nearest-neighbor interactions between Dy3+ ions dominate, despite the large Dy-Dy separation, over the nearest-neighbor interactions between the radicals and the Dy3+ ions. Measurements of the field dependence of the magnetization, both along and perpendicularly to the chain, and of the angular dependence of chiM in a strong magnetic field confirm such an interpretation. Transfer-matrix simulations of the experimental measurements are performed using a classical one-dimensional spin model with antiferromagnetic Heisenberg exchange interaction and noncollinear uniaxial single-ion anisotropies favoring a canted antiferromagnetic spin arrangement, with a net magnetic moment along the chain axis. The fine agreement obtained with experimental data provides estimates of the Hamiltonian parameters, essential for further study of the dynamics of rare-earth-based molecular chains. (literal)

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