scispace - formally typeset
Book ChapterDOI

Magnetic Intercalation Compounds of Graphite

Reads0
Chats0
TLDR
In this article, the structure and magnetic properties of magnetic acceptor and donor graphite intercalation compounds (GICs) are reviewed and compared with recent evidence for 2D magnetism in acceptor GICs.
Abstract
Magnetic graphite intercalation compounds are layered magnetic materials in which the ratio of the intraplanar to interplanar exchange coupling can be varied by several orders of magnitude through intercalation and staging. In this chapter, the structure and magnetic properties of magnetic acceptor and donor graphite intercalation compounds (GICs) are reviewed. The relation between the GIC and the pristine intercalate makes it possible to measure the effect of staging in the GIC, including the crossover to lower dimensionality. The theory of two-dimensional (2D) magnetism is reviewed and compared with recent evidence for 2D magnetism in acceptor graphite intercalation compounds. The transition-metal dichloride acceptor compounds show larger magnetic anisotropies than the donor GICs and provide instructive examples of quasi-2D magnetic systems. The prototype 2D-XY system is the CoCl2 GIC, for which a large body of experimental data is presented to infer the 2D behavior. Experimental results for the commensurate stage-1 donor compound C6Eu are presented as an example of an anisotropic RKKY magnetic interaction. In addition, progress in the study of many magnetic acceptor GICs is reviewed.

read more

Citations
More filters
Journal ArticleDOI

Multiple ferromagnetic transitions and structural distortion in the van der Waals ferromagnet VI3 at ambient and finite pressures

TL;DR: In this article, the authors performed a microscopic and thermodynamic study under hydrostatic pressure on bulk single crystals and found that VI${}_{3}$ undergoes two ferromagnetic transitions for ambient and low pressures, implying a complex magnetic structure.
Journal ArticleDOI

Carbonization behavior of polyimide film containing iron complex in relation to magnetic properties

TL;DR: In this article, a polyimide film containing iron complex at temperatures up to 1000 °C was prepared by heating polyimides with carbon matrix and fine iron particles, and the particles were α-Fe, γ-Fe and Fe3C with fractions of about 7:2:1.
Journal ArticleDOI

Magnetic Properties of Random-Mixture Graphite Intercalation Compounds

TL;DR: In this paper, the spin frustration effects of random-mixture GICs have been studied and the magnetic properties of these compounds have been investigated by dc and ac magnetic susceptibility, and low field SQUID magnetization measurements.
References
More filters
Journal ArticleDOI

Ordering, metastability and phase transitions in two-dimensional systems

TL;DR: In this article, a new definition of order called topological order is proposed for two-dimensional systems in which no long-range order of the conventional type exists, and the possibility of a phase transition characterized by a change in the response of the system to an external perturbation is discussed in the context of a mean field type of approximation.
Journal ArticleDOI

Absence of Ferromagnetism or Antiferromagnetism in One- or Two-Dimensional Isotropic Heisenberg Models

TL;DR: In this paper, it is rigorously proved that at any nonzero temperature, a one- or two-dimensional isotropic spin-S$ Heisenberg model with finite-range exchange interaction can be neither ferromagnetic nor antiferromagnetic.
Journal ArticleDOI

Crystal statistics. I. A two-dimensional model with an order-disorder transition

TL;DR: In this article, the eigenwert problem involved in the corresponding computation for a long strip crystal of finite width, joined straight to itself around a cylinder, is solved by direct product decomposition; in the special case $n=\ensuremath{\infty}$ an integral replaces a sum.
Book

Introduction to Phase Transitions and Critical Phenomena

TL;DR: In this article, the authors present a paperback edition of a distinguished book, originally published by Clarendon Press in 1971, which is at the level at which a graduate student who has studied condensed matter physics can begin to comprehend the nature of phase transitions, which involve the transformation of one state of matter into another.
Journal ArticleDOI

The Renormalization group and the epsilon expansion

TL;DR: In this paper, the modern formulation of the renormalization group is explained for both critical phenomena in classical statistical mechanics and quantum field theory, and the expansion in ϵ = 4−d is explained [ d is the dimension of space (statistical mechanics) or space-time (quantum field theory)].
Related Papers (5)