English
Related papers

Related papers: Correlation between Organic Magnetoresistance (OMA…

200 papers

Mixed valent manganites are noted for their unusual magnetic,electronic and structural phase transitions. The La1-xCaxMnO3 phase diagram shows that below transition temperatures in the range 100-260 K, compounds with 0.2 < x < 0.5 are…

Condensed Matter · Physics 2009-11-07 James C. Loudon , Neil D. Mathur , Paul A. Midgley

We have performed the powder neutron diffraction measurements on the solid solutions of SrRu_{1-x}Mn_xO_3, and found that the itinerant ferromagnetic order observed in pure SrRuO_3 changes into the C-type antiferromagnetic (AF) order with…

Strongly Correlated Electrons · Physics 2007-05-23 M. Yokoyama , C. Satoh , A. Saitou , H. Kawanaka , H. Bando , K. Ohoyama , Y. Nishihara

In this paper, we explore magneteoelectricity of rare earth orthochromites from the symmetry point of view. We determine the principal structural order parameters and find their couplings with ferroelectric and magnetic orderings. Our…

Materials Science · Physics 2021-08-11 A. K. Zvezdin , Z. V. Gareeva , X. M. Chen

We review the phenomenology of coupled magnetic and electric order parameters for systems in which ferroelectric and incommensurate magnetic order occur simultaneously. We discuss the role that such materials might play in fabricating novel…

Materials Science · Physics 2007-05-23 A. B. Harris , G. Lawes

We report the existence of ferromagnetic correlations (FMC) in paramagnetic (PM) matrix of cubic La1-xSrxMnO3-{\delta} (x = 0.80, 0.85) well above its coupled structural, magnetic and electronic phase transitions. The dc-magnetization vs…

Strongly Correlated Electrons · Physics 2015-10-28 Aga Shahee , Kiran Singh , R. J. Choudhary , N. P. Lalla

Polymeric methyltrioxorhenium, {(CH_{3})_{0.92}ReO_{3}}_{\infty} (poly-MTO), is the first member of a new class of organometallic hybrids which adopts the structural pattern and physical properties of classical perovskites in two dimensions…

We report nanoscale inter-particle magnetic orderings in self-assemblies of Fe3O4 nanoparticles (NPs), and the emergence of inter-particle antiferromagnetic (AF) (super-antiferromagnetic) correlations near the coercive field at low…

The discovery of reversible 300 K ferromagnetic ordering in a diluted magnetic semiconductor is reported. Switching of room-temperature ferromagnetism between "on" and "off" states is achieved in Co2+:ZnO by lattice incorporation and…

Materials Science · Physics 2007-05-23 Dana A. Schwartz , Daniel R. Gamelin

Spin, charge, and orbital structures in models for doped manganites are studied by a combination of analytic mean-field and numerical relaxation techniques. At realistic values for the electron-phonon and antiferromagnetic $t_{2g}$ spin…

Strongly Correlated Electrons · Physics 2009-10-31 Takashi Hotta , Elbio Dagotto

First order ferromagnetic (FM) to antiferromagnetic (AFM) phase transition in doped-CeFe$_2$ alloys is studied with micro-Hall probe technique. Clear visual evidence of magnetic phase-coexistence on micrometer scales and the evolution of…

A combination of variable-temperature neutron scattering, reverse Monte Carlo analysis and direct Monte Carlo simulation is used to characterise the emergence of magnetic order in the metal--organic framework (MOF) Tb(HCOO)$_3$ over the…

Disordered Systems and Neural Networks · Physics 2016-12-21 Daniel R. Harcombe , Philip G. Welch , Pascal Manuel , Paul J. Saines , Andrew L. Goodwin

The present study summerizes magnetic and Mossbauer measurements on ceramic Li2MO3 M= Mn, Ru and Ir and the mixed Li2(Mn1-xRux)O3 materials, which show many of the features reflecting to antiferromagnetic ordering or to existence of…

Materials Science · Physics 2009-11-07 I. Felner , I. M. Bradaric

The generic magnetic phase diagram of multiferroic RMn$_2$O$_5$ (with R=Y, Ho, Tb, Er, Tm), which allows different sequences of ordered magnetic structures for different R's and different control parameters, is described using order…

Materials Science · Physics 2009-11-13 A. B. Harris , Amnon Aharony , Ora Entin-Wohlman

The polycrystalline co-doped samples of Sm0.5Y0.5Fe0.58Mn0.42O3 were prepared by solid-state reaction route and its various physical properties with their correlations have been investigated. The dc magnetization measurements on the sample…

There has been tremendous research activity in the field of magneto-electric (ME) multiferroics after Kimura et al. [1] showed that antiferromagnetic and ferroelectric order coexist in orthorhom- bically distorted perovskite TbMnO3 and are…

We report an experimental and computational study of magnetic and electronic properties of the layered Ru(V) oxide SrRu2O6 (hexagonal, P-3 1m), which shows antiferromagnetic order with a N\'eel temperature of 563(2) K, among the highest for…

Neutron diffraction measurements on multiferroic LuFe2O4 show changes in the antiferromagnetic (AFM) structure characterized by wavevector q = (1/3 1/3 1/2) as a function of electric field cooling procedures. The increase of intensity from…

Strongly Correlated Electrons · Physics 2011-11-09 A. M. Mulders , M. Bartkowiak , J. R. Hester , E. Pomjakushina , K. Conder

Using a combination of Density Functional Theory, mean-field analysis and exact diagonalization calculations we reveal the emergence of a dimerized charge ordered state in TMTTF$_2$-PF$_6$ organic crystal. The interplay between charge and…

Strongly Correlated Electrons · Physics 2015-03-19 Gianluca Giovannetti , Sanjeev Kumar , Jean-Paul Pouget , Massimo Capone

Antiferromagnets (AFMs) with zero net magnetization are proposed as active elements in future spintronic devices. Depending on the critical thickness of the AFM thin films and the measurement temperature, bimetallic Mn-based alloys and…

The local structure about the Mn site in the half doped system La0.5Ca0.5MnO3 was measured in magnetic fields up 10 T to probe the melting of the charge ordered state. Examination of the Mn-O and Mn-Mn correlations reveal three distinct…

Strongly Correlated Electrons · Physics 2009-11-10 T. A. Tyson , M. Deleon , M. Crof , V. G. Harris , C. -C. Kao , J. Kirkland , S. -W. Cheong