Related Experiment Video
Updated: Jun 18, 2026
08:45
Fabrication of Spatially Confined Complex Oxides
Published on: July 1, 2013
Electronic self-organization in the single-layer manganite Pr1-xCa1+xMnO4
F Ye1, Songxue Chi, J A Fernandez-Baca
1Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393, USA. yef1@ornl.gov
Physical Review Letters
|November 13, 2009
Summary
Electron doping in single-layer manganites creates short-range magnetic correlations, unlike their perovskite counterparts. This suggests an inhomogeneous electronic self-organization with distinct magnetic domain structures.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Magnetism
Background:
- Single-layer manganites Pr1-xCa1+xMnO4 exhibit complex magnetic properties.
- The CE-type commensurate antiferromagnetic (AF) structure is stable at x=0.5.
- Understanding doping effects is crucial for materials science applications.
Purpose of the Study:
- Investigate doping evolution of magnetic correlations in Pr1-xCa1+xMnO4.
- Compare magnetic behavior with perovskite manganites (Pr1-xCaxMnO3).
- Elucidate the impact of electron doping on magnetic ordering.
Main Methods:
- Neutron scattering techniques were employed.
- Studied the single-layer manganite Pr1-xCa1+xMnO4 system.
- Focused on compositions away from x=0.5.
Main Results:
- Short-range incommensurate spin correlations emerge with electron doping (x<0.5).
- These correlations coexist with the stable CE-type AF order.
- Electron doping induces inhomogeneous electronic self-organization.
Conclusions:
- Electron doping leads to distinct magnetic domain structures in single-layer manganites.
- Inhomogeneous self-organization involves commensurate AF patches and electron-rich domain walls.
- Magnetic behavior differs significantly from perovskite manganites under doping.
More Related Videos
06:53Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
06:49Radio Frequency Magnetron Sputtering of GdBa2Cu3O7−δ/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 (STO) Single-crystal Substrates
Published on: April 12, 2019
Related Concept Videos
02:37Metallic Solids
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
02:28Electronic Structure of Atoms
An atom comprises protons and neutrons, which are contained inside the dense, central core called the nucleus, with electrons present around the nucleus. Taking into account the wave–particle duality of electrons and the uncertainty in position around the nucleus, quantum mechanics provides a more accurate model for the atomic structure. It describes atomic orbitals as the regions around the nucleus where electrons of discrete energy exist, characterized by four quantum numbers: n, l, ml, and...
03:26Electron Configuration of Multielectron Atoms
The alkali metal sodium (atomic number 11) has one more electron than the neon atom. This electron must go into the lowest-energy subshell available, the 3s orbital, giving a 1s22s22p63s1 configuration. The electrons occupying the outermost shell orbital(s) (highest value of n) are called valence electrons, and those occupying the inner shell orbitals are called core electrons. Since the core electron shells correspond to noble gas electron configurations, we can abbreviate electron...
02:58Crystal Field Theory - Octahedral Complexes
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
02:42Valence Bond Theory
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
01:31Ferromagnetism
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...