DOI: 10.20350/digitalcsic/10851
title: AMPHIBIAN CNR experimental data MnZn-ferrite-SANS PhysRevB2019. AMPHIBIAN GNRL simulated data MnZn-ferrite-SANS PhysRevB2019 [Dataset]

description: Dataset description: EXPERIMENTAL DATA folder "XRD data" containes the XRD patterns of all the samples presented in the manuscript folder "Magnetic data" containes the M(H) curves of all the samples presented in the manuscript measured at room temperature in a field range of � 5 T folder "TEM data" containes the TEM images of all the samples presented in the manuscript SIMULATED DATA prb_mzfo_fig10.png Microstructures used in the micromagnetic simulations. The volume fraction of the particle phase was set to 80% in all computations. The simulation volume approximately 300 � 300 � 300 nm^3 is constant in the simulations (mesh size: 4 nm). prb_mzfo_fig11.png Applied field dependence of the quantity |M|/M_s for different average particle sizes. ASCII data file for this data set is in "prb_mzfo_absm.dat", where the first column mu0H (mT) and the following ones are |M|/M_S for 14, 26, 38, 50, 62 and 74 nm crystallites systems correspondingly. Inset: Corresponding normalized magnetization curves. ASCII data file for this data set is in "prb_mzfo_mz.dat", where the first column mu0H (mT) and the following ones are M_z/M_s for 14, 26, 38, 50, 62 and 74 nm crystallites systems correspondingly. prb_mzfo_fig12.png Particle-size-dependent evolution of the parameter |M|/M_s for each magnetic particle as a function of the applied magnetic field. ASCII data file for this data set is in "prb_mzfo_absm14nmALLstep100.dat", "prb_mzfo_absm38nmALLstep5.dat" and "prb_mzfo_absm74nmALLstep1.dat" for for 14, 38, and 74 nm crystallites systems correspondingly. The first column mu0H (mT) and the following ones are |M|/M_s for every crystallite. Snapshots of spin structures at selected fields, where the largest deviations from the uniform magnetization state are observed.
description: [EN] We report the results of an unpolarized small-angle neutron-scattering (SANS) study on Mn-Zn ferrite (MZFO) magnetic nanoparticles with the aim to elucidate the interplay between their particle size and the magnetization configuration. We study different samples of single-crystalline MZFO nanoparticles with average diameters ranging between 8 to 80 nm, and demonstrate that the smallest particles are homogeneously magnetized. However, with increasing nanoparticle size, we observe the transition from a uniform to a nonuniform magnetization state. Field-dependent results for the correlation function confirm that the internal spin disorder is suppressed with increasing field strength. The experimental SANS data are supported by the results of micromagnetic simulations, which confirm an increasing inhomogeneity of the magnetization profile of the nanoparticle with increasing size. The results presented demonstrate the unique ability of SANS to detect even very small deviations of the magnetization state from the homogeneous one.
description: Dataset description: &gt;&gt;&gt; EXPERIMENTAL DATA folder "XRD data" containes the XRD patterns of all the samples presented in the manuscript folder "Magnetic data" containes the M(H) curves of all the samples presented in the manuscript measured at room temperature in a field range of � 5 T folder "TEM data" containes the TEM images of all the samples presented in the manuscript &gt;&gt;&gt; SIMULATED DATA prb_mzfo_fig10.png Microstructures used in the micromagnetic simulations. The volume fraction of the particle phase was set to 80% in all computations. The simulation volume approximately 300 � 300 � 300 nm^3 is constant in the simulations (mesh size: 4 nm). prb_mzfo_fig11.png Applied field dependence of the quantity |M|/M_s for different average particle sizes. ASCII data file for this data set is in "prb_mzfo_absm.dat", where the first column mu0H (mT) and the following ones are |M|/M_S for 14, 26, 38, 50, 62 and 74 nm crystallites systems correspondingly. Inset: Corresponding normalized magnetization curves. ASCII data file for this data set is in "prb_mzfo_mz.dat", where the first column mu0H (mT) and the following ones are M_z/M_s for 14, 26, 38, 50, 62 and 74 nm crystallites systems correspondingly. prb_mzfo_fig12.png Particle-size-dependent evolution of the parameter |M|/M_s for each magnetic particle as a function of the applied magnetic field. ASCII data file for this data set is in "prb_mzfo_absm14nmALLstep100.dat", "prb_mzfo_absm38nmALLstep5.dat" and "prb_mzfo_absm74nmALLstep1.dat" for for 14, 38, and 74 nm crystallites systems correspondingly. The first column mu0H (mT) and the following ones are |M|/M_s for every crystallite. Snapshots of spin structures at selected fields, where the largest deviations from the uniform magnetization state are observed.