Investigation of a strong titanium alloy KS15-5-3 and the application to ahigh pressure apparatus for magnetization measurements

A beta titanium alloy of Ti-15Mo-5Zr-3Al (KS15-5-3) is presented as a new m aterial for experimental apparatus to be used at extreme conditions of high pressure, low temperature, and high magnetic field. The material has a ten sile strength of 1760 MPa at room temperature and is found to be a Pauli pa ramagnet with nearly temperature-independent magnetization M/B similar to 3 x10(-2) (mJ/T g)/T, except for T <T(C)similar to2.5 K. Using this material, we developed a high-pressure clamp cell for measuring the magnetization in a commercial superconducting quantum interference device magnetometer (Qua ntum Design MPMS2). This pressure cell can be used in the pressure range 0 <P <1.0 GPa and temperatures T >T-C. To illustrate the performance of this cell, we present experimental results on a one-dimensional alternating bond antiferromagnet with S=1:Ni(333-tet)(mu -NO2)(ClO4) [333-tet denotes N,N'- bis(3-aminopropyl)-1,3-propanediamine]. (C) 2001 American Institute of Phys ics.