Magnetic phase diagram copper metaborate CuB2O4 in magnetic field parallel c-axis: resonant, magnetic and magnetoelastic investigations
نویسنده
چکیده
The magnetic phase diagram in a single crystal of copper metaborate CuB2O4 in a magnetic field parallel to a tetragonal axis c has been investigated. From the resonant, magnetic and magnetostrictive data the phase diagram of CuB2O4 on a plane “temperature magnetic field” is constructed. The magnetic incommensuratecommensurate phase transition is caused by the saturation of weak subsystem of copper ions in the strong magnetic field H‖c.
منابع مشابه
"Excitation of multiple phonon modes in copper metaborate CuB2O4 via non-resonant impulsive stimulated Raman scattering"
Copper metaborate CuB2O4 is a material with a unique crystallographic structure, space group 42m (Z=12), in which magnetic Cu ions occupy two types of nonequivalent positions 4b and 8d. Below the antiferromagnetic ordering at TN = 21 K this material demonstrates a very complicated magnetic phase diagram with commensurate and incommensurate phases [1]. This material also demonstrates very intere...
متن کاملاثر جانشانی کبالت بر خواص مغناطوالاستیکی ترکیب Cu13Fe6Nd
In this research the magnetoelastic properties of Nd6Fe13-xCoxCu (x = 0 and 1) intermetallic compoundes are investigated. Analysis of X-ray diffraction patterns indicates that a single phase is formed approximately for x = 0 and the x = 1 sample is multi-phase. The lattice parameters were decreased, the Néel temperature of main phase and the Curie temperature of impurity phase was increased...
متن کاملMagnetic Properties in a Spin-1 Random Transverse Ising Model on Square Lattice
In this paper we investigate the effect of a random transverse field, distributed according to a trimodal distribution, on the phase diagram and magnetic properties of a two-dimensional lattice (square with z=4), ferromagnetic Ising system consisting of magnetic atoms with spin-1. This study is done using the effectivefield theory (EFT) with correlations method. The equations are derived using...
متن کاملEnergy states and exchange energy of coupled double quantum dot in a magnetic field
The ground state energies of two interacting electrons confined in a coupled double quantum dot (DQD) presented in a magnetic field has been calculated by solving the relative Hamiltonian using variational and exact diagonalization methods. The singlet-triplet transitions in the angular momentum and spin of the quantum dot ground state had been shown .We have studied the magnetic field versus c...
متن کاملInvestigation of two phase unsteady nanofluid flow and heat transfer between moving parallel plates in the presence of the magnetic field using GM
In this paper, unsteady two phase simulation of nanofluid flow and heat transfer between moving parallel plates, in presence of the magnetic field is studied. The significant effects of thermophoresis and Brownian motion have been contained in the model of nanofluid flow. The three governing equations are solved simultaneously via Galerkin method. Comparison with other works indicates that this...
متن کامل