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Title: Magnetic memory from site isolated Dy(III) on silica materials

Abstract

Achieving magnetic remanence at single isolated metal sites dispersed at the surface of a solid matrix has been envisioned as a key step toward information storage and processing in the smallest unit of matter. Here, we show that isolated Dy(III) sites distributed at the surface of silica nanoparticles, prepared with a simple and scalable two-step process, show magnetic remanence and display a hysteresis loop open at liquid 4He temperature, in contrast to the molecular precursor which does not display any magnetic memory. This singular behavior is achieved through the controlled grafting of a tailored Dy(III) siloxide complex on partially dehydroxylated silica nanoparticles followed by thermal annealing. This approach allows control of the density and the structure of isolated, “bare” Dy(III) sites bound to the silica surface. Throughout the process, all organic fragments are removed, leaving the surface as the sole ligand, promoting magnetic remanence.

Authors:
 [1];  [1];  [1]; ORCiD logo [2];  [3]; ORCiD logo [4];  [4]; ORCiD logo [5];  [6];  [4]; ORCiD logo [1]
  1. ETH Zurich, Zurich (Switzerland)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Univ. Lyon, Lyon Cedex (France)
  4. Univ. de Rennes, Rennes Cedex (France)
  5. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  6. Univ. Pierre et Marie Curie, Paris Cedex (France)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1344432
Alternate Identifier(s):
OSTI ID: 1352052; OSTI ID: 1436623
Grant/Contract Number:  
AC02-05CH11231; AC02-76SF00515; FP7-PEOPLE-2012-ITN N?317127
Resource Type:
Journal Article: Published Article
Journal Name:
ACS Central Science
Additional Journal Information:
Journal Volume: 3; Journal Issue: 3; Journal ID: ISSN 2374-7943
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Allouche, Florian, Lapadula, Giuseppe, Siddiqi, Georges, Lukens, Wayne W., Maury, Olivier, Le Guennic, Boris, Pointillart, Fabrice, Dreiser, Jan, Mougel, Victor, Cador, Olivier, and Copéret, Christophe. Magnetic memory from site isolated Dy(III) on silica materials. United States: N. p., 2017. Web. doi:10.1021/acscentsci.7b00035.
Allouche, Florian, Lapadula, Giuseppe, Siddiqi, Georges, Lukens, Wayne W., Maury, Olivier, Le Guennic, Boris, Pointillart, Fabrice, Dreiser, Jan, Mougel, Victor, Cador, Olivier, & Copéret, Christophe. Magnetic memory from site isolated Dy(III) on silica materials. United States. doi:10.1021/acscentsci.7b00035.
Allouche, Florian, Lapadula, Giuseppe, Siddiqi, Georges, Lukens, Wayne W., Maury, Olivier, Le Guennic, Boris, Pointillart, Fabrice, Dreiser, Jan, Mougel, Victor, Cador, Olivier, and Copéret, Christophe. Wed . "Magnetic memory from site isolated Dy(III) on silica materials". United States. doi:10.1021/acscentsci.7b00035.
@article{osti_1344432,
title = {Magnetic memory from site isolated Dy(III) on silica materials},
author = {Allouche, Florian and Lapadula, Giuseppe and Siddiqi, Georges and Lukens, Wayne W. and Maury, Olivier and Le Guennic, Boris and Pointillart, Fabrice and Dreiser, Jan and Mougel, Victor and Cador, Olivier and Copéret, Christophe},
abstractNote = {Achieving magnetic remanence at single isolated metal sites dispersed at the surface of a solid matrix has been envisioned as a key step toward information storage and processing in the smallest unit of matter. Here, we show that isolated Dy(III) sites distributed at the surface of silica nanoparticles, prepared with a simple and scalable two-step process, show magnetic remanence and display a hysteresis loop open at liquid 4He temperature, in contrast to the molecular precursor which does not display any magnetic memory. This singular behavior is achieved through the controlled grafting of a tailored Dy(III) siloxide complex on partially dehydroxylated silica nanoparticles followed by thermal annealing. This approach allows control of the density and the structure of isolated, “bare” Dy(III) sites bound to the silica surface. Throughout the process, all organic fragments are removed, leaving the surface as the sole ligand, promoting magnetic remanence.},
doi = {10.1021/acscentsci.7b00035},
journal = {ACS Central Science},
number = 3,
volume = 3,
place = {United States},
year = {Wed Feb 22 00:00:00 EST 2017},
month = {Wed Feb 22 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1021/acscentsci.7b00035

Citation Metrics:
Cited by: 5 works
Citation information provided by
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