A. I. Dmitriev, S. V. Zaitsev, M. S. Dmitrieva, “Increasing the temperature of the magnetic ordering in La$_{0.33}$Sr$_{0.67}$FeO$_{3-\delta}$ by heat treatment”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 2024, Volume 50, Issue 13,Pages 24

Increasing the temperature of the magnetic ordering in La$_{0.33}$Sr$_{0.67}$FeO$_{3-\delta}$ by heat treatment

A. I. Dmitriev^a, S. V. Zaitsev^b, M. S. Dmitrieva^a

^a Federal Research Center for Problems of Chemical Physics and Medical Chemistry, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia
^b Osipyan Institute of Solid State Physics RAS, Chernogolovka, Russia

Abstract: The dependences of the magnetic moment on the temperature $M(T)$ and the magnetic field strength $M(H)$ of the La$_{0.33}$Sr$_{0.67}$FeO$_{3-\delta}$ samples before and after vacuum annealing were studied. At room temperature, the initial sample is a paramagnetic. Its $M(T)$ curve clearly shows the Neel temperature of $T_{\mathrm{N}}$ = 196 K, which increases significantly as a result of annealing. After annealing, the compound La$_{0.33}$Sr$_{0.67}$FeO$_{3-\delta}$ is in a magnetically ordered state at room temperature.

Keywords: lanthanum orthoferrites, canted antiferromagnetism, vacuum annealing.

Received: 15.02.2024
Revised: 21.03.2024
Accepted: 23.03.2024

DOI: 10.61011/PJTF.2024.13.58163.19894