| Abstract: | The FeF3---ZrF4 system has been investigated using X-ray diffraction, micro-DTA, magnetic measurements, and Mössbauer spectroscopy. At 850°C two solid solutions with formulas Fe1−xZrxF3+x have been obtained, which are based on the VF3 type for 0 ≤ x < 0.10 and on the ReO3 type for 0.10 ≤ x ≤ 0.23, respectively. A phase transition occurs in the VF3-type domain: the transition temperature decreases with increasing x. All phases exhibit an antiferromagnetic behavior. The thermal variation of Mössbauer parameters has been studied for x = 0.05 and x = 0.23 as well as their variation vs composition at 300 K. The magnetic behavior is discussed on the basis of the structural data presently available. |
