000149759 001__ 149759
000149759 005__ 20250127155744.0
000149759 0247_ $$2doi$$a10.1039/c6tc00919k
000149759 0248_ $$2sideral$$a106254
000149759 037__ $$aART-2016-106254
000149759 041__ $$aeng
000149759 100__ $$aBartolome, E.
000149759 245__ $$aAntiferromagnetic single-chain magnet slow relaxation in the {Tb(alpha-fur)(3)}(n) polymer with non-Kramers ions
000149759 260__ $$c2016
000149759 5060_ $$aAccess copy available to the general public$$fUnrestricted
000149759 5203_ $$aWe report the synthesis, crystal structure and magnetic properties of a new molecular complex based on a Tb(III) ion supported by 2-furancarboxylic molecules: {Tb(alpha-fur)(3)(H2O)(3)}(n) (alpha-fur = C4H3OCOO). Two slightly different Tb sites (A and B) exist depending on the position of one of the dangling ligands. Ab initio calculations predict that, for both sites, the magnetic ground state is highly anisotropic (g(z)* = 17.8) and consists of a quasi-doublet with a small gap, well isolated from the next excited state. The a-fur ligand forms 1D polymeric chains of Tb ions of the same type (either A or B) running along the c-axis. The crystal structure is formed by the supramolecular stacking along the a-axis of 2D layers containing parallel chains of the same type. Static magnetization and heat capacity measurements show that, magnetically, the system can be modeled as an ensemble of Ising chains of non-Kramers Tb ions with effective spin S-star = 1/2, antiferromagnetically (AF) coupled by a weak intrachain interaction (J(star)/k(B) = -0.135 K). At very low temperatures, the static susceptibility reflects the presence of a 2-4% concentration of defects in the chains. Ac susceptibility measurements at H = 0 performed down to mK temperatures have enabled us to observe the slow relaxation of magnetization through two different pathways. They are assigned to Single-Chain-Magnet (SCM) behavior in two different types of AF chains (A and B), triggered by the existence of defects breaking the chains into segments with short-range order. At temperatures below 0.1 K this mechanism is replaced by individual relaxation of the ions through direct processes. Under the application of a magnetic field the system slowly relaxes by two distinct direct processes, strongly affected by a phonon bottleneck effect.
000149759 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E98-MOLCHIP$$9info:eu-repo/grantAgreement/ES/DGA/IMANA-E34$$9info:eu-repo/grantAgreement/ES/MINECO-FSE-FEDER/MAT2014-53921-R$$9info:eu-repo/grantAgreement/ES/MINECO/MAT2011-23791$$9info:eu-repo/grantAgreement/ES/MINECO/MAT2011-27233-C02-02$$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2015-68204-R
000149759 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000149759 590__ $$a5.256$$b2016
000149759 591__ $$aPHYSICS, APPLIED$$b18 / 147 = 0.122$$c2016$$dQ1$$eT1
000149759 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b36 / 273 = 0.132$$c2016$$dQ1$$eT1
000149759 592__ $$a1.825$$b2016
000149759 593__ $$aMaterials Chemistry$$c2016$$dQ1
000149759 593__ $$aChemistry (miscellaneous)$$c2016$$dQ1
000149759 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000149759 700__ $$0(orcid)0000-0002-6517-1236$$aBartolome, J.$$uUniversidad de Zaragoza
000149759 700__ $$0(orcid)0000-0002-5999-341X$$aArauzo, A.$$uUniversidad de Zaragoza
000149759 700__ $$0(orcid)0000-0002-9208-0807$$aLuzon, J.
000149759 700__ $$aBadia, L.
000149759 700__ $$0(orcid)0000-0002-9258-7907$$aCases, R.$$uUniversidad de Zaragoza
000149759 700__ $$0(orcid)0000-0001-6284-0521$$aLuis, F.$$uUniversidad de Zaragoza
000149759 700__ $$aMelnic, S.
000149759 700__ $$aProdius, D.
000149759 700__ $$aShova, S.
000149759 700__ $$aTurta, C.
000149759 7102_ $$10$$2X$$aUniversidad de Zaragoza$$bServ.Gral. Apoyo Investigación$$cServicios. Div.Caract.Físi.Quí
000149759 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada
000149759 773__ $$g4, 22 (2016), 5038-5050$$pJ. mater. chem. C$$tJOURNAL OF MATERIALS CHEMISTRY C$$x2050-7526
000149759 8564_ $$s3944036$$uhttps://zaguan.unizar.es/record/149759/files/texto_completo.pdf$$yPostprint
000149759 8564_ $$s2067920$$uhttps://zaguan.unizar.es/record/149759/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000149759 909CO $$ooai:zaguan.unizar.es:149759$$particulos$$pdriver
000149759 951__ $$a2025-01-27-14:42:44
000149759 980__ $$aARTICLE