P13631-E002PF: Pulsed field magnetostriction of Ba₂CoTeO₆

Technical Report · Wed Mar 01 00:00:00 EST 2017

DOI:https://doi.org/10.2172/1345911· OSTI ID:1345911

Tanaka, H. ^[1]; Kurita, N. ^[1]; Koike, M. ^[1]; Jaime, Marcelo ^[2]; Weickert, Dagmar Franziska ^[2]

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1. Tokyo Inst. of Technology (Japan)
2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Ba₂CoTeO₆ is an insulating material consisting of two magnetic subsystems referred as A and B build of S=1/2 spins. Subsystem A is considered to be a Heisenberg-like antiferromagnet (AFM) on a triangular lattice and subsystem B is a J₁-J₂ Ising-like AFM on a honey-comb lattice. The magnetic phase transitions are observed at T_N1 = 12 K and T_N2=3K for A and B respectively. The application of magnetic fields unveils a rich phase diagram that varies depending on the direction of the applied field for either H ll c or H perp c. To date the phase diagram has been investigated by means of specific heat measurement up to 9T and susceptibility measurements with a SQUID magnetometer up to 7T. Magnetization measured in pulsed magnetic fields up to 60T at 1.3K and 4.2K reveal several steps and plateaux occurring at varying critical fields depending on the crystallographic direction. Common to the magnetization parallel c and perpendicular c is the saturation above 40T.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: National Science Foundation (NSF); USDOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1345911
• Report Number(s): LA-UR-17-21730
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
High Magnetic Field Science