Antiferromagnetic Resonance Absorption

Far infrared antiferromagnetic resonance in FeCl2, FeBr 2 and FeI2

2014 A far infrared investigation of antiferromagnetic resonance by means of Fouriertransform spectroscopy has been carried out in FeCl2, FeBr2 and FeI2. In FeCl2 and FeBr2 our results are found to agree well with the two-sublattice model with an anisotropy parameter D = 9.6 K. In FeI2 three absorption peaks situated at 21.6 cm-1, 29.2 cm-1, and 32.2 cm-1 have been attributed to excitation of z...

Electronic magnetic resonance in a series of antiferromagnetic molecular perovskites

The magnetic propertie~ of a series of ternary tetrathiafulvalenium (TTF + ) salts incorporating, wiIhin a unique antiperovskite structure, a discrete halide (Y Cl-, Bror I-j in addition to an octahedral molybdenum halide cluster dianion Mo6X(I (with X = Cl or Br), are described, The preparation and structural chemistry of the materials of general formula

Electron Spin Resonance in S = 1/2 antiferromagnetic chains

A systematic field-theory approach to Electron Spin Resonance (ESR) in the S = 1/2 quantum antiferromagnetic chain at low temperature T (compared to the exchange coupling J) is developed. In particular, effects of a transverse staggered field h and an exchange anisotropy (including a dipolar interaction) δ on the ESR lineshape are discussed. In the lowest order of perturbation theory, the linew...

Recoilless nuclear resonance absorption of gamma radiation

Inverse Braking Radiation and Resonance Absorption in Corona Plasmas of Inertial Confinement Fusion

Abstract: In this paper, combining the Maxwell equations with the electron balanceequation, we obtain the inverse braking radiation absorption coefficient in a laser fusioncorona plasma. For a fixed plasma temperature, variations of the absorption coefficientversus the penetration depth into the plasma are illustrated numerically for differentvalues of laser wavelength. ...