skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Influence of lanthanides on spin-relaxation and spin-structure in a family of Fe 7Ln 4 single molecule magnets

Abstract

A family of isostructural undecanuclear 3d–4f coordination clusters of formula [Fe III 7Ln III 4O 4(OH) 3(tea) 2(Htea) 3(Piv) 7(H 2O) 2(NO 3) 3], where Ln = Y (1), Gd (2), Tb (3), Dy (4); PivH ≡ pivalic acid and H 3tea ≡ triethanolamine, was synthesised in this paper. The central Fe7 core of the coordination cluster can be described in terms of two {Fe 4O 2} butterfly motifs sharing a common body Fe atom. The two Fe 4 mean-planes subtend a dihedral angle of ca. 72°. The Tb (3) and Dy (4) compounds show Single Molecule Magnet (SMM) behaviour as confirmed by ac-susceptibility and μ-SQUID measurements. Furthermore, 57Fe Mössbauer spectra of 1–4 confirm the presence of high-spin Fe III sites. The spectra of all complexes in the high temperature range (30–300 K) show broad overlapping doublets which were assigned to the body and wing-tip pairs of metal ions within the Fe 7 core. The low temperature Mössbauer spectra show dependence on the nature of the rare-earth metal as a result of its interaction with the iron sites. Finally, we observed a transition from fast (2), to intermediate (1) and very slow (frozen) (3, 4) spin fluctuation phenomena in thesemore » compounds.« less

Authors:
ORCiD logo [1]; ORCiD logo [2];  [3];  [4]; ORCiD logo [5]; ORCiD logo [3]; ORCiD logo [6]; ORCiD logo [7]; ORCiD logo [8]
  1. Karlsruhe Inst. of Technology (KIT) (Germany). Inst. of Inorganic Chemistry; Ames Lab., Ames, IA (United States). Critical Materials Inst.
  2. Karlsruhe Inst. of Technology (KIT) (Germany). KIT Steel and Lightweight Structures. Research Center for Steel, Timber and Masonry
  3. Ames Lab. and Iowa State Univ., Ames, IA (United States). Material Science & Engineering
  4. Karlsruhe Inst. of Technology (KIT) (Germany). Inst. of Inorganic Chemistry. Inst. of Nanotechnology; Inst. Neel, Grenoble (France)
  5. Univ. of Strasbourg (France). Dept. of Chemistry
  6. Karlsruhe Inst. of Technology (KIT) (Germany). Inst. of Nanotechnology; Inst. Neel, Grenoble (France)
  7. Karlsruhe Inst. of Technology (KIT) (Germany). Inst. of Inorganic Chemistry
  8. Karlsruhe Inst. of Technology (KIT) (Germany). Inst. of Inorganic Chemistry. Inst. of Nanotechnology
Publication Date:
Research Org.:
Ames Lab. and Iowa State Univ., Ames, IA (United States); Karlsruhe Inst. of Technology (KIT) (Germany)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Advanced Manufacturing Office (EE-5A); Alexander von Humboldt Foundation (Germany); German Research Foundation (DFG)
OSTI Identifier:
1425470
Alternate Identifier(s):
OSTI ID: 1434127
Report Number(s):
IS-J-9582
Journal ID: ISSN 2050-7526
Grant/Contract Number:
AC02-07CH11358
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Materials Chemistry C
Additional Journal Information:
Journal Volume: 6; Journal Issue: 11; Journal ID: ISSN 2050-7526
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Prodius, Denis, Mereacre, Valeriu, Singh, Prashant, Lan, Yanhua, Mameri, Samir, Johnson, Duane D., Wernsdorfer, Wolfgang, Anson, Christopher E., and Powell, Annie K. Influence of lanthanides on spin-relaxation and spin-structure in a family of Fe7Ln4 single molecule magnets. United States: N. p., 2018. Web. doi:10.1039/C8TC00322J.
Prodius, Denis, Mereacre, Valeriu, Singh, Prashant, Lan, Yanhua, Mameri, Samir, Johnson, Duane D., Wernsdorfer, Wolfgang, Anson, Christopher E., & Powell, Annie K. Influence of lanthanides on spin-relaxation and spin-structure in a family of Fe7Ln4 single molecule magnets. United States. doi:10.1039/C8TC00322J.
Prodius, Denis, Mereacre, Valeriu, Singh, Prashant, Lan, Yanhua, Mameri, Samir, Johnson, Duane D., Wernsdorfer, Wolfgang, Anson, Christopher E., and Powell, Annie K. Thu . "Influence of lanthanides on spin-relaxation and spin-structure in a family of Fe7Ln4 single molecule magnets". United States. doi:10.1039/C8TC00322J.
@article{osti_1425470,
title = {Influence of lanthanides on spin-relaxation and spin-structure in a family of Fe7Ln4 single molecule magnets},
author = {Prodius, Denis and Mereacre, Valeriu and Singh, Prashant and Lan, Yanhua and Mameri, Samir and Johnson, Duane D. and Wernsdorfer, Wolfgang and Anson, Christopher E. and Powell, Annie K.},
abstractNote = {A family of isostructural undecanuclear 3d–4f coordination clusters of formula [FeIII7LnIII4O4(OH)3(tea)2(Htea)3(Piv)7(H2O)2(NO3)3], where Ln = Y (1), Gd (2), Tb (3), Dy (4); PivH ≡ pivalic acid and H3tea ≡ triethanolamine, was synthesised in this paper. The central Fe7 core of the coordination cluster can be described in terms of two {Fe4O2} butterfly motifs sharing a common body Fe atom. The two Fe4 mean-planes subtend a dihedral angle of ca. 72°. The Tb (3) and Dy (4) compounds show Single Molecule Magnet (SMM) behaviour as confirmed by ac-susceptibility and μ-SQUID measurements. Furthermore, 57Fe Mössbauer spectra of 1–4 confirm the presence of high-spin FeIII sites. The spectra of all complexes in the high temperature range (30–300 K) show broad overlapping doublets which were assigned to the body and wing-tip pairs of metal ions within the Fe7 core. The low temperature Mössbauer spectra show dependence on the nature of the rare-earth metal as a result of its interaction with the iron sites. Finally, we observed a transition from fast (2), to intermediate (1) and very slow (frozen) (3, 4) spin fluctuation phenomena in these compounds.},
doi = {10.1039/C8TC00322J},
journal = {Journal of Materials Chemistry C},
number = 11,
volume = 6,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2018},
month = {Thu Mar 01 00:00:00 EST 2018}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on March 1, 2019
Publisher's Version of Record

Save / Share: