Details

Autor(en) / Beteiligte

• Popov, D. V.
• Yatsyk, I. V.
• Batulin, R. G.
• Cherosov, M. A.
• Vakhitov, I. R.
• Faizrakhmanov, I. A.
• Yusupov, R. V.
• Chupakhina, T. I.
• Deeva, Yu. A.
• Fazlizhanov, I. I.
• Maiti, T.
• Eremina, R. M.

Titel

Magnetic Phase Separation in Double Perovskite Sr2TiMnO5.87

Ist Teil von

• Applied magnetic resonance, 2023-05, Vol.54 (4-5), p.561-580

Ort / Verlag

Vienna: Springer Vienna

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The double perovskite Sr 2 TiMnO 5.87 was synthesized via the solution combustion precursor method using Sr(NO 3 ) 2 , MnO 2 , i-Ti(OC 3 H 7 ) 4 , and disubstituted ammonium citrate as a complexing agent. The crystal structure and unit cell parameters are refined by the Rietveld method using powder X-ray diffraction. The magnetic properties of double perovskites Sr 2 TiMnO 5.87 were studied using the ESR spectroscopy, specific heat measurements in the temperature range ~ 5–300 K, and magnetometry under cooling in zero- (ZFC) and nonzero-fields (FC). The four ESR line were observed in ESR spectra, three ESR lines with g ~ 2 and fourth ESR at B res  = 50 mT in both X-and Q-bands measurements in the temperature range 37.5–42 K in Sr 2 TiMnO 5.87 . The peaks obtained in real and imaginary parts of AC magnetization measurements confirm phase separation at the same temperatures. The antiferromagnetic ordering was found out below the temperature T N ≈ 12 K. The fitting Debye and Einstein temperatures, obtained from the specific heat measurements, are equal to θ D  = 217 K, θ E1  = 275 K, θ E2  = 615 K, and θ E3  = 2000 K.