The magnetism of at low fields

Abstract

Magnetic susceptibility and magnetization measurements were made on a polycrystalline sample of . The compound is ferromagnetic for at any applied magnetic field. For temperatures between and and magnetic fields smaller than a critical field , the compound is helimagnetic. When or , the anisotropy in the basal plane increases, and the compound becomes ferromagnetic.

Determining the magnetic ground state of TbNi5 single crystal using polarized neutron scattering technique

“…Thus, we can conclude that the two phase model of the TbNi 5 magnetic structure as suggested in Refs. [14,15] is not correct.…”

“…Based on the resistivity data authors of Ref. [14] concluded that a critical field was m 0 H fer ¼ 3 kOe. A discrepancy in the critical field values they explained by a high demagnetization factor of parallelepipedic form of a specimen used in their resistivity measurements.…”

“…However, AC susceptibility and magnetization data [14,15] taken at low magnetic field indicated that the magnetic state of the TbNi 5 might well be more complex than a simple ferromagnetic structure originally thought. Subsequently, it was suggested in Refs.…”

“…Subsequently, it was suggested in Refs. [14,15] that TbNi 5 orders in a helimagnetic structure within antiferromagnetic domains between 16.5 and 23 K if the applied magnetic field is smaller than 0.45 kOe. These domains were claimed to be separated by thin ferromagnetic domain boundaries.…”

“…Based on this analysis, we proposed a single magnetic phase unlike the two-phase magnetic model proposed in Refs. [14,15]. More recently, another magnetic model was suggested [18], which has a cycloid spiral structure with a ferromagnetic component of Tb-ion moment along the a-axis and a modulated component on the bc plane.…”