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The nanoscopic magneto-electronic phase separation in doped La1-xSrxCoO3 perovskites was studied with local probes. The phase separation is directly observed by M\"ossbauer spectroscopy in the studied doping range of 0.05 <= x <= 0.25 both…

The magnetization behaviour of the soft Cobalt Ferrite-hard Strontium Ferrite nanocomposite is tuned from the non exchange spring nature to the exchange spring nature, by controlling the particle size of the soft Cobalt Ferrite in the…

材料科学 · 物理学 2015-06-15 Debangsu Roy , Sreenivasulu K , P S Anil Kumar

The first order reversal curve (FORC) method is a magnetometry based technique used to capture nanoscale magnetic phase separation and interactions with macroscopic measurements using minor hysteresis loop analysis. This makes the FORC…

Magnetic skyrmions are novel topological spin textures on the nanoscale, and significant efforts have been taken to improve their zero-field density at room temperature (RT). In this work, we reported an approach of improving zero-field…

强关联电子 · 物理学 2020-06-12 Mangyuan Ma , Calvin Ching Ian Ang , Yong Li , Weiliang Gan , Wen Siang Lew , Fusheng Ma

Neutron powder diffraction measurements, combined with magnetization and resistivity data, have been carried out in the doped perovskite La$_{1-x}$Ca$_x$MnO$_3$ ($x=0.47$, 0.50, and 0.53) to elucidate the structural, magnetic, and…

强关联电子 · 物理学 2009-10-31 Q. Huang , J. W. Lynn , R. W. Erwin , A. Santoro , D. C. Dender , V. N. Smolyaninova , K. Ghosh , R. L. Greene

We apply the first-order reversal curve (FORC) method, borrowed from studies of ferromagnetic materials, to the magneto-structural phase transition of FeTe. FORC measurements reveal two features in the hysteretic phase transition, even in…

强关联电子 · 物理学 2017-06-28 M. K. Frampton , J. Crocker , D. A. Gilbert , N. Curro , Kai Liu , J. A. Schneeloch , G. D. Gu , R. J. Zieve

We report the observation of unusual exchange bias phenomena in the doped perovskite cobaltites La_{1-x}Sr_{x}CoO_{3} (x = 0.15, 0.18, and 0.30) in which a spontaneous phase separation into ferromagnetic clusters embedded in a…

强关联电子 · 物理学 2011-11-30 Young Sun , Yan-kun Tang , Zhao-hua Cheng

The generic problem of extracting information on intrinsic particle properties from the whole class of interacting magnetic fine particle systems is a long standing and difficult inverse problem. As an example, the Switching Field…

材料科学 · 物理学 2016-11-29 Sergiu Ruta , Ondrej Hovorka , Pin-Wei Huang , Kangkang Wang , Ganping Ju , Roy Chantrell

First Order Reversal Curves (FORCs) have been used for a number of years for the extraction of information from magnetization measurements. The results are most unambiguous for irreversible processes -- for a collection of Preisach…

材料科学 · 物理学 2016-10-31 P. B. Visscher

First Order Reversal Curve (FORC) diagrams are a popular tool in geophysics and materials science for the characterization of magnetic particles of natural and synthetic origin. However, there is still a lot of controversy about the…

The magnetometric technique of First Order Reversal Curve (FORC) analysis, applicable to hysteretic systems, is introduced to the study of superconducting samples. Some typical superconducting structures in FORC diagram are identified, and…

超导电性 · 物理学 2023-05-30 E. R. Di Lascio

The structural, electrical transport and magnetic properties of perovskite oxides La1-xTexMnO3 have been investigated and thus the magnetic phase diagram of La1-xTexMnO3 compounds as a function of temperature and the doping level x has been…

强关联电子 · 物理学 2007-05-23 J. Yang , W. H. Song , Y. Q. Ma , R. L. Zhang , B. C. Zhao , Z. G. Sheng , G. H. Zheng , J. M. Dai , Y. P. Sun

The first order reversal curve (FORC) method is a macroscopic measurement technique which can be used to extract quantitative, microscopic properties of hysteretic systems. Using magnetic transmission X-ray microscopy (MTXM), local…

材料科学 · 物理学 2024-06-12 Dustin A. Gilbert , Mi-Young Im , Kai Liu , Peter Fischer

Combined first order reversal curve (FORC) analyses of the magnetization (M-FORC) and magnetoresistance (MR-FORC) have been employed to provide a comprehensive study of the M-MR correlation in two canonical systems: a NiFe/Cu/FePt pseudo…

材料科学 · 物理学 2014-09-12 Randy K. Dumas , Peter K. Greene , Dustin A. Gilbert , Li Ye , Chaolin Zha , Johan Åkerman , Kai Liu

The first-order reversal curve (FORC) method for analysis of systems undergoing hysteresis is applied to dynamical models of electrochemical adsorption. In this setting, the method can not only differentiate between discontinuous and…

材料科学 · 物理学 2007-05-23 I. Abou Hamad , D. T. Robb , P. A. Rikvold

Transport and magnetic measurements have been carried out on perovskite Co-oxides R1-xAxCoO3 (R=La, Pr, and Nd; A=Ba, Sr and Ca; 0<x<0.5: All sets of the R and A species except Nd1-xBaxCoO3 have been studied.). With increasing the Sr- or…

Multiphase magnetic systems are common in nature and are increasingly being recognized in technical applications. One characterization method which has shown great promise for determining separate and collective effects of multiphase…

材料科学 · 物理学 2018-02-14 Yue Cao , Mostafa Ahmadzadeh , Ke Xu , Brad Dodrill , John S. McCloy

Double-perovskite oxides that contain both 3d and 5d transition metal elements have attracted growing interest as they provide a model system to study the interplay of strong electron interaction and large spin-orbit coupling (SOC). Here,…

In conventional FORC (First Order Reversal Curve) analysis of a magnetic system, reversible and low-coercivity irreversible materials are treated as being qualitatively different: the FORC distribution shows low-coercivity materials but…

材料科学 · 物理学 2018-11-07 P. B. Visscher

Neutron scattering has been used to investigate the evolution of the long- and short-range charge-ordered (CO), ferromagnetic (FM), and antiferromagnetic (AF) correlations in single crystals of Pr1-xCaxMnO3. The existence and population of…

强关联电子 · 物理学 2009-11-13 Hao Sha , F. Ye , Pengcheng Dai , J. A. Fernandez-Baca , D. Mesa , J. W. Lynn , Y. Tomioka , Y. Tokura , Jiandi Zhang
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