6 papers
Structures and Electromagnetic Properties of New Metal-Ordered Manganites; RBaMn_{2}O_{6} (R = Y and Rare Earth Elements)
T. Nakajima, H. Kageyama, H. Yoshizawa +1
New metal-ordered manganites RBaMn_{2}O_{6} have been synthesized and investigated in the structures and electromagnetic properties. RBaMn_{2}O_{6} can be classified into three gro…
Successive Phase Transitions in a Metal-Ordered Manganite Perovskite YBaMn2O6
T. Nakajima, H. Kageyama, Y. Ueda
Structural, magnetic and electric properties of a metal-ordered perovskite YBaMn2O6 have been studied by means of powder X-ray diffraction, DSC, magnetic susceptibility, and electr…
Heat transport in SrCu_2(BO_3)_2 and CuGeO_3
M. Hofmann, T. Lorenz, A. Freimuth +5
In the low dimensional spin systems and the thermal conductivities along different crystal directions show pronounced double-peak structures and strongly…
Structural Phase Transition in the 2D Spin Dimer Compound SrCu2(BO3)2
K. Sparta, G. J. Redhammer, P. Roussel +11
A displacive, 2nd order structural phase transition at Ts=395 K from space group I`4 2 m below Ts to I 4/m c m above Ts has been discovered in the two-dimensional spin dimer compou…
Far infrared study of the two dimensional dimer spin system SrCu_2(BO_3)_2
T. Room, U. Nagel, E. Lippmaa +3
Using far-infrared spectroscopy in magnetic fields up to 12T we have studied a two-dimensional dimer spin gap system SrCu_2(BO_3)_2. We found several infrared active modes in the d…
Direct observation of the multiple spin gap excitations in two-dimensional dimer system SrCu2(BO3)2
H Nojiri, H. Kageyama, Kenzo Onizuka +2
Various spin gap excitations have been observed in the two-dimensional dimer system SrCu_2(BO_3)_2 by means of submillimeter wave ESR. The zero-field energy gap of the lowest spin…