Gd4(Mn0.05Sb0.95)3 In homogeneity Magnetic phase transition Structure
Issue Date:
2003
Publisher:
Physica B: Condensed Matter
Citation:
Volume 327, Issue 4-Feb, Page 307-310
Abstract:
This work studies the structure and magnetic properties of Gd4(Mn0.05Sb0.95)3 with the aim to
clarify the role played by the magnetic Mn atom. Upon substitution of Mn for Sb in the parent Gd4Sb3
compound, it is found that the inverted Th3P4-like structure has been somewhat expanded. The Curie
temperature is increased while magnetic moment, measured in the field of 50kOe at 200K, is slightly
reduced. The ferromagnetic semiconductor, Gd4(Mn0.05Sb0.95)3, undergoes a ferromagnetic to
paramagnetic transition at 270K. Observed anomalies occur in the magnetization vs. temperature curves
measured in a very low magnetic field. They are attributed to magnetic inhomogeneities resulting from a
structural modification in Gd4(Mn0.05Sb0.95)3. ?? 2002 Elsevier Science B.V. All rights reserved.
