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All Journal Jurnal Sains Materi Indonesia
A. A. Nugroho
Van der Waals-Zeeman lnstituut, Universiteit van Amsterdam, Valckenierstraat 65, 1018 XE, Amsterdam Department of Physics, Institut Teknologi Bandung Jl. Ganesha 10, Bandung 40132
Materials Science & Nanotechnology

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MAGNETIC PHASE TRANSITIONS OF T-PHASE Gd2CuO4 SINGLE CRYSTAL I. M. Sutjahja; M. Diantoro; A. A. Nugroho; A. Menovsky; M. O. Tjia
Jurnal Sains Materi Indonesia Vol 3, No 2: FEBRUARI 2002
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (613.32 KB) | DOI: 10.17146/jusami.2002.3.2.5223

Abstract

MAGNETIC PHASE TRANSITIONS OF T-PHASE Gd2CuO4 SINGLE CRYSTAL. The magnetic properties of T‘-phase Gd2CuO4 Single crystal grown by the Traveling Solvent Floating Zone (TSFZ) method have been investigated by means of ac-magnetic susceptibility and dc-magnetization measurements. The result of these studies revealed an anomaly in the temperature dependent magnetization at temperature of T = 6.5, 290 and 20 K, associated respectively with the long-range antiferromagnetic ordering of the Gd and Cu ions and Cu- spin reorientation transitions. The complex magnetic structure of this compound shown by the weak ferromagnetic behavior below the copper ordering temperature (TN(Cu) = 290 K) is induced by an effective field due to exchange interactions between the ordered copper moments and the rare-earth ions. These results, together with the previous neutron diffraction measurement, establishes the existence of ferromagnetic Gd layers in the ab-plane which are stacked antiferromagnetically along c-direction, indicating a quasi—two dimensional antiferromagnetic nature of Gd2CuO4.
Co-Authors A. Menovsky I. M. Sutjahja M. Diantoro M. O. Tjia