Physical and magnetic properties of Sm0.2Gd0.8Ni4B compound

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dc.authorwosidÖzçelik, Bekir/C-5986-2018
dc.authorwosidgüler, nilay kantarcı/AAU-5912-2020
dc.contributor.authorOzcelik, Bekir
dc.contributor.authorKantarci, Nilay
dc.contributor.authorNane, Onur
dc.contributor.authorYakinci, M. Eyyuphan
dc.date.accessioned2024-08-04T20:36:01Z
dc.date.available2024-08-04T20:36:01Z
dc.date.issued2012
dc.departmentİnönü Üniversitesien_US
dc.description5th Moscow International Symposium on Magnetism (MISM 2011) -- AUG 21-25, 2011 -- Lomonosov Moscow State Univ, Moscow, RUSSIAen_US
dc.description.abstractPhysical properties of the Sm0.2Gd0.8Ni4B compound have been investigated by means of the X-ray powder diffraction, DC and AC-susceptibility techniques. The compound studied crystallizes in CeCo4B type structure with P6/mmm space group. The unit-cell parameters a and c are determined as 5.01 and 6.95 angstrom, respectively, and the unit-cell volume V is calculated as 151.08 angstrom(3). DC and AC magnetic measurements present the visible magnetic phase transition from paramagnetic to ferromagnetic, around definite transition temperature. The magnetic phase transition temperature of the compound is obtained from DC magnetization, AC-susceptibility and the well known Kouvel-Fisher method as 36.6, 35.7 and 35.2 K, respectively. The saturation magnetization (Ms) and the coercive fields (Hc) of the compound are found to be 3.7 mu(B)/f.u and 277 Oe, respectively, by using the hysteresis loops at 9.5 K. We have also investigated the non-linear AC-susceptibility of the compound, around its ferromagnetic transition temperature, as a function of temperature, frequency and amplitude of the AC-driving field. In order to explain the measured experimental results, we have used the theory developed for ferromagnetic, based upon the mean field model. The measurements exhibit both frequency and amplitude dependencies. Observed dependencies are compared with the existing theories of linear and nonlinear susceptibilities with reference to short- and long-range interactions. In Kouvel-Fisher method, one plots 1/chi(1)*(d chi(-1)/dT) against T, obtaining a straight line. The slope of this line gives the critical exponent gamma, and it intersects the T axis at Tc. In order to obtain d chi(-1)/dT and the best straight line, we used a two-point numerical differentiation program and linear regression method, respectively. The critical exponent gamma of the sample is calculated to be 2.78 +/- 0.05. The value of the critical exponent beta, which is characteristic of static phase transition to a ferromagnetic state, is estimated as 2.41 +/- 0.3 from the slope of the line obtained the plot of the absolute third-harmonic values versus the reduced temperature on a log log scale.en_US
dc.description.sponsorshipMoscow State Univ,Russian Fdn Basic Res,Dynasty Fdn,Russian Acad Sci,Kapitza Inst Phys Problems,147th Comm Japanese Soc Promot Sci,NT-MDT Nanotechnol,Sci Council RAS Condenced-matter Phys,Russian Acad Sci, Inst Theoret Appl Electromagnet,Magnet Soc Japanen_US
dc.description.sponsorshipTurkish State Planning Organization (DPT) [2010K120520]en_US
dc.description.sponsorshipThis work was supported by Turkish State Planning Organization (DPT) under grant number 2010K120520.en_US
dc.identifier.doi10.4028/www.scientific.net/SSP.190.208
dc.identifier.endpage+en_US
dc.identifier.issn1012-0394
dc.identifier.scopus2-s2.0-84864188110en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage208en_US
dc.identifier.urihttps://doi.org/10.4028/www.scientific.net/SSP.190.208
dc.identifier.urihttps://hdl.handle.net/11616/95733
dc.identifier.volume190en_US
dc.identifier.wosWOS:000308061600051en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherTrans Tech Publications Ltden_US
dc.relation.ispartofMagnetism and Magnetic Materials Ven_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectMagnetic propertiesen_US
dc.subjectAC-susceptibilityen_US
dc.subjectDC-magnetizationen_US
dc.titlePhysical and magnetic properties of Sm0.2Gd0.8Ni4B compounden_US
dc.typeConference Objecten_US

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