Sökning: (WFRF:(Farina R))
> (2020-2024) >
Unusually large mag...
Unusually large magnetic moment and tricritical behavior of the CMR compound NaCr 2 O 4 revealed with high resolution neutron diffraction and μ + SR
-
- Nocerino, E. (författare)
- Alba Nova Universitetscentrum,AlbaNova University Center. Stockholm Center for Physics, Astronomy and Biotechnology
-
- Forslund, Ola Kenji, 1990 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Sakurai, Hiroya (författare)
- National Institute for Materials Science (NIMS)
-
visa fler...
-
- Hoshikawa, Akinori (författare)
- Ibaraki University
-
- Matsubara, Nami (författare)
- Alba Nova Universitetscentrum,AlbaNova University Center. Stockholm Center for Physics, Astronomy and Biotechnology
-
- Andreica, Daniel (författare)
- Universitatea Babes-Bolyai,Babeș-Bolyai University
-
- Zubayer, Anton (författare)
- Linköpings universitet,Linköping University
-
- Mazza, F. (författare)
- Technische Universität Wien,Vienna University of Technology
-
- Saito, Takashi (författare)
- High Energy Accelerator Research Organization (KEK)
-
- Sugiyama, Jun (författare)
- Japan Atomic Energy Agency
-
- Umegaki, I. (författare)
- High Energy Accelerator Research Organization (KEK)
-
- Sassa, Yasmine, 1981 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Månsson, Martin (författare)
- Alba Nova Universitetscentrum,AlbaNova University Center. Stockholm Center for Physics, Astronomy and Biotechnology
-
visa färre...
-
(creator_code:org_t)
- 2023
- 2023
- Engelska.
-
Ingår i: JPhys Materials. - 2515-7639. ; 6:3
- Relaterad länk:
-
https://research.cha... (primary) (free)
-
visa fler...
-
https://research.cha...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- The mixed valence Cr3+/Cr4+ compound NaCr2O4, hosts a plethora of unconventional electronic properties. In the present study, muon spin rotation/relaxation ( μ + SR) and high-resolution time-of-flight neutron powder diffraction measurements were carried out on high-quality samples to clarify the complex magnetic ground state of this unique material. We identified a commensurate canted antiferromagnetic order (C-AFM) with a canting angle of the Cr spin axial vector equal to θ c = ( 8.8 ± 0.5 ) ∘ , and an estimated Cr moment μ C r C ∼ ( 4.30 ± 0.01 ) μ B . Such an unusually large value of μ C r C is compatible with the existence of high-spin Cr sites created by the presence of an unconventional negative charge transfer state in NaCr2O4. In addition to the C-AFM structure, a novel magnetic supercell was also revealed. Such supercell display an incommensurate (IC)-AFM propagation vector (0 0 1 2 − δ ), having a Cr moment μ C r I C = ( 2.20 ± 0.03 ) μ B . It is suggested that the C-AFM and IC-AFM modulations have two different electronic origins, being due to itinerant and localized contributions to the magnetic moment respectively. Finally, the direct measurement of the magnetic order parameter for the C-AFM structure provided a value of the critical exponent β = 0.245 ≈ 1 4 , suggesting a non conventional critical behavior for the magnetic phase transition in NaCr2O4
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- neutron diffraction
- unconventional magnetism
- muon spin rotation
- colossal magnetoresistance
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
-
Nocerino, E.
-
Forslund, Ola Ke ...
-
Sakurai, Hiroya
-
Hoshikawa, Akino ...
-
Matsubara, Nami
-
Andreica, Daniel
-
visa fler...
-
Zubayer, Anton
-
Mazza, F.
-
Saito, Takashi
-
Sugiyama, Jun
-
Umegaki, I.
-
Sassa, Yasmine, ...
-
Månsson, Martin
-
visa färre...
- Om ämnet
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Fysik
-
och Den kondenserade ...
- Artiklar i publikationen
-
JPhys Materials
- Av lärosätet
-
Chalmers tekniska högskola