prikaz prve stranice dokumenta Ferromagnetism in Co7(TeO3)4Br6: A byproduct of complex antiferromagnetic order and single-ion anisotropy
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Scientific paper - Original scientific paper
Ferromagnetism in Co7(TeO3)4Br6: A byproduct of complex antiferromagnetic order and single-ion anisotropy
Physical review B: Condensed matter and materials physics, 79 (2009), 14; 144433. https://doi.org/10.1103/PhysRevB.79.144433
Prester, Mladen; Živković, Ivica; Zaharko, O.; Pajić, Damir; Tregenna-Piggott, P.; Berger, Helmut

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Prester, M., Živković, I., Zaharko, O., Pajić, D., Tregenna Piggott, P. & Berger, H. (2009). Ferromagnetism in Co7(TeO3)4Br6: A byproduct of complex antiferromagnetic order and single-ion anisotropy. Physical review B: Condensed matter and materials physics, 79. (14). doi: 10.1103/PhysRevB.79.144433

Prester, Mladen, et al. "Ferromagnetism in Co7(TeO3)4Br6: A byproduct of complex antiferromagnetic order and single-ion anisotropy." Physical review B: Condensed matter and materials physics, vol. 79, no. 14, 2009. https://doi.org/10.1103/PhysRevB.79.144433

Prester, Mladen, Ivica Živković, O. Zaharko, Damir Pajić, P. Tregenna Piggott and Helmut Berger. "Ferromagnetism in Co7(TeO3)4Br6: A byproduct of complex antiferromagnetic order and single-ion anisotropy." Physical review B: Condensed matter and materials physics 79, no. 14 (2009). https://doi.org/10.1103/PhysRevB.79.144433

Prester, M., et al. (2009) 'Ferromagnetism in Co7(TeO3)4Br6: A byproduct of complex antiferromagnetic order and single-ion anisotropy', Physical review B: Condensed matter and materials physics, 79(14). doi: 10.1103/PhysRevB.79.144433

Prester M, Živković I, Zaharko O, Pajić D, Tregenna Piggott P, Berger H. Ferromagnetism in Co7(TeO3)4Br6: A byproduct of complex antiferromagnetic order and single-ion anisotropy. Physical review B: Condensed matter and materials physics [Internet]. 2009 [cited 2024 December 19];79(14). doi: 10.1103/PhysRevB.79.144433

M. Prester, I. Živković, O. Zaharko, D. Pajić, P. Tregenna Piggott and H. Berger, "Ferromagnetism in Co7(TeO3)4Br6: A byproduct of complex antiferromagnetic order and single-ion anisotropy", Physical review B: Condensed matter and materials physics, vol. 79, no. 14, 2009. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:879982. [Accessed: 19 December 2024]

Metadata
Title (english)Ferromagnetism in Co7(TeO3)4Br6: A byproduct of complex antiferromagnetic order and single-ion anisotropy
AuthorMladen Prester
AuthorIvica Živković
AuthorO. Zaharko
AuthorDamir Pajić
AuthorP. Tregenna-Piggott
AuthorHelmut Berger
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
Pronounced anisotropy of magnetic properties and complex magnetic order of a new oxi-halide compound Co7(TeO3)4Br6 has been investigated by powder and single-crystal neutron-diffraction, magnetization, and ac susceptibility techniques. Anisotropy of susceptibility extends far into the paramagnetic temperature range. A principal source of anisotropy are anisotropic properties of the involved octahedrally coordinated single Co2+ ions, as confirmed by angular-overlap-model calculations presented in this work. Incommensurate antiferromagnetic order sets in at TN=34 K. The propagation vector is strongly temperature dependent reaching k1=(0.9458(6) ,0,0.6026(5)) at 30 K. A transition to a ferrimagnetic structure with k2=0 takes place at TC=27 K. The magnetically ordered phase is characterized by very unusual anisotropy as well: while M-H scans along the b axis reveal spectacularly rectangular but otherwise standard ferromagnetic hysteresis loops, M-H studies along other two principal axes are perfectly reversible, revealing very sharp spin-flop (or spin-flip) transitions, such as in a standard antiferromagnet (or metamagnet). Altogether, the observed magnetic phenomenology is interpreted as an evidence of competing magnetic interactions permeating the system, in particular of the single-ion anisotropy energy and the exchange interactions. Different coordinations of the Co2+ ions involved in the low-symmetry C2/c structure of Co7(TeO3)4Br6 render the exchange-interaction network very complex by itself. Temperature-dependent changes in the magnetic structure, together with an abrupt emergence of a ferromagnetic component, are ascribed to continual spin reorientations described by a multicomponent, but yet unknown, spin Hamiltonian.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical review B: Condensed matter and materials physics
Numberingvol. 79, no. 14, 144433
p-ISSN1098-0121
e-ISSN1550-235X
DOIhttps://doi.org/10.1103/PhysRevB.79.144433
URN:NBNurn:nbn:hr:217:879982
Publication2009
ProjectNumber: 035-0352843-2845
Title (croatian): Kvantni magneti: Osnovna stanja u kompeticiji
Leader: Mladen Prester
Jurisdiction: Croatia
Funding stream: ZP
ProjectNumber: 119-1191458-1017
Title (croatian): Nanomagneti
Leader: Krešo Zadro
Jurisdiction: Croatia
Funding stream: ZP
Document URLhttp://link.aps.org/doi/10.1103/PhysRevB.79.144433
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public noteCopyright (2009) by the American Physical Society. Received 2 February 2009; revised manuscript received 4 April 2009; published 29 April 2009.
Created on2019-10-20 17:53:04