Magnetic structure investigation in CePd2Al2 compound
Intermetallic CePd2Al2 compound crystallizes in the ordered non-centrosymmeric tetragonal structure of CaBe2Ge2-type (space group 129, P4/nmm). Although the ground state nature of CePd2Al2 has not been reported so far, other interesting features were found in this compound. The structural phase transition from tetragonal to orthorhombic structure (Cmma) was observed around 13.5 K. Such a structural transition is rather rare phenomenon among R2T2X2 compounds, which reveal stable crystal structure mostly. The highly interesting phenomenon in CePd2Al2 is the existence of quasi-bound states, vibrons, arising from strong magneto-elastic coupling and observed by inelastic neutron scattering as an additional peak in the energy spectra. CePd2Al2 thus naturally belongs to materials studied within our broader project focused on existence of vibron states and its influence on magnetic and structural properties. CePd2Al2 orders antiferromagnetically with Neel temperature 2.8(1) K. No other phase transition was observed down to 0.4 K. The aim of proposed experiment is to determine the magnetic structure of CePd2Al2.
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KLICPERA Milan; JAVORSKY Pavel; PASZTOROVA Jana and PUENTE ORENCH Ines. (2014). Magnetic structure investigation in CePd2Al2 compound. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2304
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