Magnetic phase diagram of TbGa2

✍ Scribed by I Auneau; G.L.F Fraga; D Gignoux; D Schmitt; F.Y Zhang

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 419 KB
• Volume: 212
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(95)00373-h

✦ Synopsis

Magnetization measurements on a single crystal, powder neutron diffraction experiments and specific heat on the hexagonal TbGa z compounds are presented. Below T N = 18.5 K, multistep metamagnetic transitions are observed when the field is applied perpendicular to the [00 1] hard magnetization axis. The H-T magnetic phase diagrams along the [10 0] and [1 2 0] directions were deduced. At any temperature below TN, the magnetic structure is described with the incommensurate propagation vector Q = (½, ½, 0.189). From the neutron diffraction experiments three possible magnetic structures are deduced, among them a triangular structure modulated along c being the most likely.