Metamagnetic phase transitions in ErCo3 investigated with microscopic methods

NMR studies on magnetic properties of intermetallic compounds

“…Fig. 1 is quite different from those obtained in Er 1Àx Y x Co 3 at x ¼ 0 and 0.1 [2][3][4]. There, all the frequencies change at g ¼ 10:01 MHz=T, the gyromagnetic ratio of 59 Co.…”

“…The magnetic easy axis was oriented in an external field and fixed in paraffin at room temperature. From zero field NMR, three resolved Co lines were obtained at 23, 65 and 96 MHz, which correspond to 3b, 6c, 18h sites, respectively [2,3]. Their field dependence in fields applied parallel to the easy axis shows that all Co moments are aligned collinear to the c axis [3,4].…”

“…From zero field NMR, three resolved Co lines were obtained at 23, 65 and 96 MHz, which correspond to 3b, 6c, 18h sites, respectively [2,3]. Their field dependence in fields applied parallel to the easy axis shows that all Co moments are aligned collinear to the c axis [3,4]. When an external field above 3 T is applied perpendicular to the c axis, a field induced metamagnetic transition occurs: the moments of 18h-and 3b-Co are inclined by 60 and 50 from the c axis, respectively, whereas that of 6c-Co is inclined by 20 [4].…”

Field induced metamagnetic transition of ErCo3 studied by NMR

“…Recently, a temperature induced phase transition was found at 100 K [3,4]. From the zero field NMR of 59 Co in ErCo 3 at 4.2 K using powdered sample, three Co resolved lines were obtained at 23, 65, and 96 MHz, which corresponds to 3b, 6c, 18h sites, respectively [5,6]. Temperature induced metamagnetic transition around 100 K was also confirmed from the temperature dependence of the Co sublattice magnetizations obtained by NMR [5,6].…”

“…From the zero field NMR of 59 Co in ErCo 3 at 4.2 K using powdered sample, three Co resolved lines were obtained at 23, 65, and 96 MHz, which corresponds to 3b, 6c, 18h sites, respectively [5,6]. Temperature induced metamagnetic transition around 100 K was also confirmed from the temperature dependence of the Co sublattice magnetizations obtained by NMR [5,6]. According to the results of neutron diffraction [2], the field induced metamagnetic transition was found around 3 T at 4.2 K when the field was applied perpendicular to the c-axis.…”