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master's thesis
Antiferomagnetski uređeno stanje u sustavu spinskih tetramera SeCuO3
Zagreb: University of Zagreb, Faculty of Science, 2017. urn:nbn:hr:217:374556
Rapljenović, Željko
University of Zagreb
Faculty of Science
Department of Physics

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Rapljenović, Ž. (2017). Antiferomagnetski uređeno stanje u sustavu spinskih tetramera SeCuO3 (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:374556

Rapljenović, Željko. "Antiferomagnetski uređeno stanje u sustavu spinskih tetramera SeCuO3." Master's thesis, University of Zagreb, Faculty of Science, 2017. https://urn.nsk.hr/urn:nbn:hr:217:374556

Rapljenović, Željko. "Antiferomagnetski uređeno stanje u sustavu spinskih tetramera SeCuO3." Master's thesis, University of Zagreb, Faculty of Science, 2017. https://urn.nsk.hr/urn:nbn:hr:217:374556

Rapljenović, Ž. (2017). 'Antiferomagnetski uređeno stanje u sustavu spinskih tetramera SeCuO3', Master's thesis, University of Zagreb, Faculty of Science, accessed 18 April 2024, https://urn.nsk.hr/urn:nbn:hr:217:374556

Rapljenović Ž. Antiferomagnetski uređeno stanje u sustavu spinskih tetramera SeCuO3 [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2017 [cited 2024 April 18] Available at: https://urn.nsk.hr/urn:nbn:hr:217:374556

Ž. Rapljenović, "Antiferomagnetski uređeno stanje u sustavu spinskih tetramera SeCuO3", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:217:374556

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Metadata
TitleAntiferomagnetski uređeno stanje u sustavu spinskih tetramera SeCuO3
Title (english)Antiferromagnetically ordered state in spin tetramer system SeCuO3
AuthorŽeljko Rapljenović
MentorMirta Herak (mentor)
MentorMaja Planinić (mentor)
Committee memberMaja Planinić (predsjednik povjerenstva)
Committee memberMirta Herak (član povjerenstva)
Committee memberDanko Radić (član povjerenstva)
Committee memberŽeljko Skoko (član povjerenstva)
Committee memberVito Despoja (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Physics)
Zagreb
Defense date and country2017-07-24, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract
U ovom radu proučavana su svojstva antiferomagnetski uređenog stanja u sustavu spinskih tetramera SeCuO3. Antiferomagnetski upredeno stanje nastaje ispod Néelove temperature TN = 8 K, a proučavano je metodom mjerenja magnetskog momenta sile u magnetskim poljima H ≤ 4:5 T pri temperaturama nižim od Néelove. Magnetski moment sile osjetljiv je na magnetsku anizotropiju čitavog uzorka, te mjerenjima kutne ovisnosti moguće je odrediti simetriju uređenog stanja za jednostavnije oblike dugodosežnog magnetskog uređenja. Koristeći elemente simetrije pripadne kristalne strukture konstruirali smo oblik magnetokristalne energije te ga iskoristili u fenomenološkom pristupu za opis magnetske anizotropije i spinskih reorijentacija u konačnom magnetskom polju u SeCuO3. Pri tome smo pretpostavili da je uređenje jednostavno jednoosno antiferomagnetsko kako je predloženo u literaturi. Dobiveni rezultati simulacija dobro se slažu s eksperimentom no postoje neka odstupanja koja ukazuju na kompliciranije magnetsko uređenje te pozivaju na daljnja istraživanja magnetske strukture ovog sustava.
Abstract (english)
In this master thesis we studied properties of antiferromagnetically ordered state of spin tetramer system SeCuO3. This system orders antiferromagnetically below Néel temperature. We studied this state using torque magnetometry in magnetic fields H ≤ 4:5 T at temperatures lower than TN. Magnetic torque is sensitive to magnetic anisotropy of the sample, and by measuring angular dependence one can determine the symmetry of the magnetically ordered state for some simple long-range order. Applying symmetry elements of the crystal structure we construct magnetocrystalline energy which we use in phenomenological approach to describe magnetic anisotropy and spin reorientations in finite magnetic field in SeCuO3. In this approach simple uniaxial antiferromagnetic order as suggested in literature. Simulation results are in good agreement with experiment, however there are some discrepancies which to more complicated magnetic order and call for further investigation of magnetic structure of this system.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:374556
Study programmeTitle: Physics and Technology; specializations in: Education
Course: Education
Study programme type: university
Study level: integrated undergraduate and graduate
Academic / professional title: magistar/magistra edukacije fizike i tehnike (magistar/magistra edukacije fizike i tehnike)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Embargo expiration date: 2018-01-24
Terms of useLicence In copyright icon
RepositoryRepository of the Faculty of Science
Created on2017-08-30 12:52:11

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