Open AccessSynthesis and magnetism of the intercalation compound Fe0.95PS3(MV)0.11
Author(s) -
Yaodong Dai,
YanPing He,
Haihong Huang,
Tao Shao,
Xia Yuanfu
Publication year - 2003
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.52.3020
Subject(s) - antiferromagnetism , magnetism , spin canting , monoclinic crystal system , ferromagnetism , materials science , crystallography , intercalation (chemistry) , magnetic susceptibility , crystal structure , condensed matter physics , antibonding molecular orbital , magnetization , spins , ion , atomic orbital , chemistry , inorganic chemistry , physics , magnetic field , electron , organic chemistry , quantum mechanics
The intercalation compound Fe0.95PS3(MV)0.11 (MV is the methylviol ogen cation) has been prepared. Its crystal structure and magnetism have been in vestigated by x-ray diffraction (XRD), susceptibility measurements and Mssbaue r experiments. Its XRD pattern can be indexed in a monoclinic unit cell with a=0 .879nm, b=0.944?nm, c=1.070nm, β=114.76°. The distance between layers of this intercalation compound is increased by 0.33nm compared with that of FePS3. Th e data of susceptibility show that second-order magnetic phase transitions have occurred when the temperature changed from 300K down to 4.2K. A ferromagnetic ph ase transition occurred below TC=84K. An antiferromagnetic phase tran sition occurred below TN=26K. The results of Mssbauer spectra taken in the t emperatur e range of 12 to 300K indicate that there are three kinds of divalent ions with their high spin states, which imply a charge transfer from guest to the Fe—S e g antibonding orbitals of the FePS3 host lattice, and some ions have been re leased from the FePS3 host lattice and then some vacancies have been formed. T he ferromagnetism originates from a canting of the spins of Fe2+, whe reas the antiferromagnetism occurred when the canting of the spins of Fe2+ have been modified at the lowest temperatures.