NAGIOS: RODERIC FUNCIONANDO

Two-dimensional magnetic behavior in hybrid NiFe-layered double hydroxides by molecular engineering

Repositori DSpace/Manakin

Valencià Castellano

Inici
Investigació
e-prints
23 - Química
Visualitza element

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

Two-dimensional magnetic behavior in hybrid NiFe-layered double hydroxides by molecular engineering

Mostra el registre parcial de l'element

dc.contributor.author	Seijas-Da Silva, Alvaro
dc.contributor.author	Carrasco Andrés, José Alberto
dc.contributor.author	Vieira, Bruno J. C.
dc.contributor.author	Waerenborgh, João C.
dc.contributor.author	Coronado Miralles, Eugenio
dc.contributor.author	Abellán Sáez, Gonzalo
dc.date.accessioned	2023-03-24T18:30:30Z
dc.date.available	2023-03-24T18:30:30Z
dc.date.issued	2022
dc.identifier.citation	Seijas-Da Silva, Alvaro Carrasco Andrés, José Alberto Vieira, Bruno J.C. Waerenborgh, João C. Coronado Miralles, Eugenio Abellán Sáez, Gonzalo 2022 Two-dimensional magnetic behavior in hybrid NiFe-layered double hydroxides by molecular engineering Dalton Transactions 52 1219 1228
dc.identifier.uri	https://hdl.handle.net/10550/85926
dc.description.abstract	Layered double hydroxides (LDHs) are a class of two-dimensional (2D) anionic materials that exhibit remarkable chemical versatility, making them ideal building blocks in the design of complex multifunctional materials. In this line, a NiFe-LDH is probably one of the most important LDHs due to its interesting electrochemical and magnetic properties. However, no direct magnetic measurements of exfoliated NiFe-LDH nanosheets have been reported so far. Herein, we synthesize a hybrid NiFe-LDH family through anion exchange reactions using surfactant molecules in order to increase the interlayer space (ranging from 8 to 31.6 Å), minimizing the interlayer dipolar interactions. By intercalation with octadecylsulphate, we have managed to obtain the largest interlayer space reported for a NiFe-LDH while keeping a similar size, morphology and composition. This wide interlayer separation results in a decrease in temperatures at which spontaneous magnetization (TM) occurs and the blocking temperature (TB), as well as a decrease in the coercive fields (HC). In fact, an abrupt drop in all these magnetic parameters above 30 Å interlayer distance is observed, evidencing complete magnetic decoupling of the layers. We have further validated our molecular engineering approach by characterizing the hybrid materials by Mössbauer spectroscopy and comparing the magnetic analysis results with those for a liquid phase exfoliated NiFe-LDH sample. Overall, this work provides fundamental insights into the magnetism of NiFe-LDHs, showing the potential of molecular engineering for designing hybrid layered magnetic materials approaching the 2D magnetic limit.
dc.language.iso	eng
dc.relation.ispartof	Dalton Transactions, 2022, vol. 52, p. 1219-1228
dc.subject	Química
dc.title	Two-dimensional magnetic behavior in hybrid NiFe-layered double hydroxides by molecular engineering
dc.type	journal article	es_ES
dc.date.updated	2023-03-24T18:30:31Z
dc.identifier.doi	10.1039/D2DT03804H
dc.identifier.idgrec	156885
dc.rights.accessRights	open access	es_ES