Magnetska dinamika dvoslojnog manganita La1.4Sr1.6Mn2O7

Sunko, Veronika

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master's thesis

Magnetska dinamika dvoslojnog manganita La1.4Sr1.6Mn2O7

Zagreb: University of Zagreb, Faculty of Science, 2014. urn:nbn:hr:217:119696

Sunko, Veronika

University of Zagreb
Faculty of Science
Department of Physics

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APA 6th Edition

Sunko, V. (2014). Magnetska dinamika dvoslojnog manganita La1.4Sr1.6Mn2O7 (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:119696

MLA 8th Edition

Sunko, Veronika. "Magnetska dinamika dvoslojnog manganita La1.4Sr1.6Mn2O7." Master's thesis, University of Zagreb, Faculty of Science, 2014. https://urn.nsk.hr/urn:nbn:hr:217:119696

Chicago 17th Edition

Sunko, Veronika. "Magnetska dinamika dvoslojnog manganita La1.4Sr1.6Mn2O7." Master's thesis, University of Zagreb, Faculty of Science, 2014. https://urn.nsk.hr/urn:nbn:hr:217:119696

Harvard

Sunko, V. (2014). 'Magnetska dinamika dvoslojnog manganita La1.4Sr1.6Mn2O7', Master's thesis, University of Zagreb, Faculty of Science, accessed 23 April 2024, https://urn.nsk.hr/urn:nbn:hr:217:119696

Vancouver

Sunko V. Magnetska dinamika dvoslojnog manganita La1.4Sr1.6Mn2O7 [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2014 [cited 2024 April 23] Available at: https://urn.nsk.hr/urn:nbn:hr:217:119696

IEEE

V. Sunko, "Magnetska dinamika dvoslojnog manganita La1.4Sr1.6Mn2O7", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2014. Available at: https://urn.nsk.hr/urn:nbn:hr:217:119696

Cite this item: https://urn.nsk.hr/urn:nbn:hr:217:119696

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Metadata

Title	Magnetska dinamika dvoslojnog manganita La1.4Sr1.6Mn2O7
Title (english)	Magnetic dynamics of bilayer manganite La1.4Sr1.6Mn2O7
Author	Veronika Sunko
Mentor	Ivica Živković (mentor)
Mentor	Damir Pajić (mentor)
Committee member	Damir Pajić (predsjednik povjerenstva)
Committee member	Ivica Živković (član povjerenstva)
Committee member	Ivan Kupčić (član povjerenstva)
Committee member	Miroslav Požek (član povjerenstva)
Committee member	Hrvoje Buljan (član povjerenstva)
Granter	University of Zagreb Faculty of Science (Department of Physics) Zagreb
Defense date and country	2014-09-24, Croatia
Scientific / art field, discipline and subdiscipline	NATURAL SCIENCES Physics
Abstract	U ovom radu je istraživana magnetska dinamika dvoslojnog manganita La1.4Sr1.6Mn2O7 mjerenjem linearne i nelinearne izmjenične susceptibilnosti na temperaturama izmedu 4.2 K i 400 K, te magnetizacije izmedu 320 K i 500 K. Dokazano je postojanje Griffithsove faze na 370 K, dugodosežnog magnetskog uređenja na 91.2 K, te pojava staklastog ponašanja na temperaturama nižima od uređenja, s temperaturom ostakljivanja od 26.4 K. Također, uočeno je pet feromagnetskih prijelaza između 250 K i 320 K, koje pripisujemo kristalnim defektima. Predložen je model prema kojem su defekti zaslužni za metalnu vodljivost duž c kristalnog smjera na temperaturama ispod magnetskog uređenja.
Abstract (english)	The magnetic dynamics of the bilayer manganite La1.4Sr1.6Mn2O7 was investigated by measuring the linear and nonlinear AC susceptibility between 4.2 K and 400 K, and magnetization between 320 K and 500 K. It was proven that a Griffiths-like phase appears at 370 K, and that long range order is set at 91.2 K. Bellow the ordering temperature the system behaves as a reentrant spin glass, with the freezing temperature of 26.4 K. Also, there are five ferromagnetic transitions between 250 K and 320 K, which are attributed to crystal defects. We propose a model according to which these defects cause the metallic conduction in the c crystallographic direction in the magnetically ordered phase.
Keywords
Language	croatian
URN:NBN	urn:nbn:hr:217:119696
Study programme	Title: Physics; specializations in: Research Course: Research Study programme type: university Study level: integrated undergraduate and graduate Academic / professional title: magistar/magistra fizike (magistar/magistra fizike)
Type of resource	Text
File origin	Born digital
Access conditions	Open access
Terms of use
Repository	Repository of the Faculty of Science
Created on	2017-06-16 11:55:36

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