Kazuya Kamazawa

Spin liquid state in ZnFe2O4

Abstract Magnetic diffuse scattering of neutrons was studied using a ZnFe 2 O 4 single crystal. Diffuse peaks are located along the lines of the first Brillouin zone boundary of fcc structure although the maximum peak intensity is observed at around (3/4 3/4 0). The results are compared with those for the 3D quantum spin liquid system Y(Sc)Mn 2 .

Magnetic Properties of ZnFe2O4 as a 3-D Geometrical Spin Frustration System

Magnetic properties of ZnFe 2 O 4 were studied for various specimens prepared by different thermal and artificial treatments using neutron scattering, Mossbauer spectroscopy and DC and AC susceptibilities. We found a strong correlation between the magnetic Bragg peak intensity and the Mossbauer absorption line-width. Comparing with the susceptibility data, it is discussed what are the intrinsic magnetic properties of ZnFe 2 O 4 as a typical 3-D geometrical spin frustration system.

Crystal-field parameters of the rare-earth pyrochlores R 2 Ti 2 O 7 ( R = Tb , Dy, and Ho)

In this work, we present inelastic neutron scattering experiments which probe the single ion ground states of the rare-earth pyrochlores

A Spin Molecule Model for Geometrically Frustrated Spinel ZnFe2O4

{R}_{2}{\mathrm{Ti}}_{2}{\mathrm{O}}_{7}

Acoustic study of dynamical molecular-spin state without magnetic phase transition in spin-frustratedZnFe2O4

(

Background Caused by Continuously Emitted High-Energy Neutrons at the Chopper Spectrometer 4SEASONS

R=\text{Tb}

Spin Fluctuation in YBaFe4O7+δ with Geometrically Frustrated Pyrochlore Lattice of Fe Spins

, Dy, Ho).

Interrelationship between Number of Mobile Protons, Diffusion Coefficient, and AC Conductivity in Superprotonic Conductors, CsHSO4 and Rb3H(SeO4)2

{\text{Dy}}_{2}{\text{Ti}}_{2}{\text{O}}_{7}

Topological spin excitations in a three-dimensional antiferromagnet

and

Spin wave dispersion just above the magnetic order-order transition in the metallic antiferromagnet Mn3Pt

{\text{Ho}}_{2}{\text{Ti}}_{2}{\text{O}}_{7}