Search: onr:"swepub:oai:research.chalmers.se:cc3aa7e1-6e08-4dfa-a66b-edd7348e1111" >
Simultaneous Indivi...
Simultaneous Individual and Dipolar Collective Properties in Binary Assemblies of Magnetic Nanoparticles
-
- Sanchez, Elena H. (author)
- Universidad de Castilla, La Mancha,University of Castilla, La Mancha,Univ Castilla La Mancha, IRICA, Ciudad Real 13071, Spain;Univ Castilla La Mancha, Dept Fis Aplicada, Ciudad Real 13071, Spain
-
- Vasilakaki, Marianna (author)
- Fundacio Institut Catala de Nanociencia i Nanotecnologia (ICN2),Catalan Institute of Nanoscience and Nanotechnology (ICN2),Inst Nanosci & Nanotechnol, Aghia Paraskevi 15310, Greece
-
- Lee, Su Seong (author)
- Inst Bioengn & Nanotechnol, The Nanos 138669, Singapore
-
show more...
-
- Normile, Peter S. (author)
- Universidad de Castilla, La Mancha,University of Castilla, La Mancha,Univ Castilla La Mancha, IRICA, Ciudad Real 13071, Spain;Univ Castilla La Mancha, Dept Fis Aplicada, Ciudad Real 13071, Spain
-
- Muscas, Giuseppe (author)
- Uppsala universitet,Materialfysik,Materialteori,Univ Cagliari, Dipartimento Fis, I-09042 Monserrato, Italy
-
- Murgia, Massimiliano (author)
- Universidad de Castilla, La Mancha,University of Castilla, La Mancha,Universita degli Studi di Cagliari,University of Cagliari,Univ Castilla La Mancha, IRICA, Ciudad Real 13071, Spain;Univ Castilla La Mancha, Dept Fis Aplicada, Ciudad Real 13071, Spain;Univ Cagliari, Dipartimento Fis, I-09042 Monserrato, Italy
-
- Andersson, Mikael, 1988 (author)
- Uppsala universitet,Fasta tillståndets fysik,Chalmers Univ Technol, Dept Chem & Chem Engn, SE-41296 Gothenburg, Sweden
-
- Singh, Gurvinder (author)
- The University of Sydney,Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2008, Australia
-
- Mathieu, Roland (author)
- Uppsala universitet,Fasta tillståndets fysik
-
- Nordblad, Per (author)
- Uppsala universitet,Fasta tillståndets fysik
-
- Ricci, Pier Carlo (author)
- Universita degli Studi di Cagliari,University of Cagliari,Univ Cagliari, Dipartimento Fis, I-09042 Monserrato, Italy
-
- Peddis, Davide (author)
- Università degli Studi di Genova,University of Genoa,Consiglio Nazionale delle Ricerche (CNR),National Research Council of Italy (CNR),Univ Genoa, Dipartimento Chim & Chim Ind, I-16146 Genoa, Italy;CNR, Ist Struct Mat, I-00015 Monterotondo, RM, Italy
-
- Trohidou, Kalliopi N. (author)
- Fundacio Institut Catala de Nanociencia i Nanotecnologia (ICN2),Catalan Institute of Nanoscience and Nanotechnology (ICN2),Inst Nanosci & Nanotechnol, Aghia Paraskevi 15310, Greece
-
- Nogues, Josep (author)
- Institucio Catalana de Recerca i Estudis Avancats (ICREA),Catalan Institution for Research and Advanced Studies (ICREA),Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council,CSIC, Catalan Inst Nanosci & Nanotechnol ICN2, Bellaterra 08193, Spain;ICREA, Barcelona 08010, Spain
-
- De Toro, Jose A. (author)
- Universidad de Castilla, La Mancha,University of Castilla, La Mancha,Univ Castilla La Mancha, IRICA, Ciudad Real 13071, Spain;Univ Castilla La Mancha, Dept Fis Aplicada, Ciudad Real 13071, Spain
-
show less...
-
(creator_code:org_t)
- 2020-01-15
- 2020
- English.
-
In: Chemistry of Materials. - : American Chemical Society (ACS). - 1520-5002 .- 0897-4756. ; 32:3, s. 969-981
- Related links:
-
http://arxiv.org/pdf...
-
show more...
-
https://research.cha...
-
https://doi.org/10.1...
-
https://urn.kb.se/re...
-
show less...
Abstract
Subject headings
Close
- Applications based on aggregates of magnetic nanoparticles are becoming increasingly widespread, ranging from hyperthermia to magnetic recording. However, although some uses require collective behavior, others need a more individual-like response, the conditions leading to either of these behaviors are still poorly understood. Here, we use nanoscale-uniform binary random dense mixtures with different proportions of oxide magnetic nanoparticles with low/high anisotropy as a valuable tool to explore the crossover from individual to collective behavior. Two different anisotropy scenarios have been studied in two series of binary compacts: M1, comprising maghemite (gamma-Fe2O3) nanoparticles of different sizes (9.0 nm/11.5 nm) with barely a factor of 2 between their anisotropy energies, and M2, mixing equally sized pure maghemite (low-anisotropy) and Co-doped maghemite (high-anisotropy) nanoparticles with a large difference in anisotropy energy (ratio > 8). Interestingly, while the M1 series exhibits collective behavior typical of strongly coupled dipolar systems, the M2 series presents a more complex scenario where different magnetic properties resemble either "individual-like" or "collective", crucially emphasizing that the collective character must be ascribed to specific properties and not to the system as a whole. The strong differences between the two series offer new insight (systematically ratified by simulations) into the subtle interplay between dipolar interactions, local anisotropy and sample heterogeneity to determine the behavior of dense assemblies of magnetic nanoparticles.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- DYNAMICS
- MODEL
- SUPERPARAMAGNETISM
- SPIN DISORDER
- NANOCRYSTAL SUPERLATTICES
- COFE2O4
- REMANENCE
- MAGNETORESISTANCE
- RANDOM ANISOTROPY
- CHARGE-DISTRIBUTION
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database
- By the author/editor
-
Sanchez, Elena H ...
-
Vasilakaki, Mari ...
-
Lee, Su Seong
-
Normile, Peter S ...
-
Muscas, Giuseppe
-
Murgia, Massimil ...
-
show more...
-
Andersson, Mikae ...
-
Singh, Gurvinder
-
Mathieu, Roland
-
Nordblad, Per
-
Ricci, Pier Carl ...
-
Peddis, Davide
-
Trohidou, Kallio ...
-
Nogues, Josep
-
De Toro, Jose A.
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Chemical Science ...
-
and Inorganic Chemis ...
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Chemical Science ...
-
and Physical Chemist ...
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Condensed Matter ...
- Articles in the publication
-
Chemistry of Mat ...
- By the university
-
Chalmers University of Technology
-
Uppsala University