Electron-doped Sm1−xSrxMnO3 perovskite manganites: Crystal and magnetic structures and physical properties

Ultrasonic and elastic moduli evidence for Curie temperature (Tc) in Sm1−xSrxMnO3 perovskite magnetic materials at x=0.25, 0.30, 0.37, 0.40 and 0.44

“…At T = 0.5 both T c and T N are comparable and the existence of charge or orbital ordering is appearing. As no peak is obtained in the present investigation other than T c and T JT , the above study Sm0.45Sr0.55MnO3 160 - [36] confirms the absence of charge ordering in present investigation. From phase diagram, it is understood that FM ordering occurs at x < 0.475 and AFM at 0.5 ≤ x ≤ 0.575 which confirms the present investigation that as x < 0.5, the state of nature of material is FM in nature.…”

“…Further, studies of magnetic and transport properties have been made in Sm 1−x Sr x MnO 3 [36]. It is interesting to note that FM metal at x < 0.5 changes into layered (A-type) AFM non-metal at x > 0.5.…”

Electronic, structural and magnetic phase diagram of Sm1-xSrxMnO3 manganites

“…For xZ0.63, the crystal structure of the samples is described by the tetragonal space group I4/mcm (no. 140) [10]. Fig.…”

“…Samples were prepared with compositions x= 0.16, 0.25, 0.30, 0.40, 0.45, 0.50, 0.55, 0.63, and 0.67. We investigated manganites prepared and characterized at the CRISMAT Laboratory of Caen University (France) by using a conventional synthesis process in air described, e.g., in [9,10]. For comparison, some compositions were prepared at the Chemical Department of Moscow State University (Russia) using ''paper synthesis'' [5].…”

“…There were no detailed data on the crystal and magnetic structures of the Sm-Sr system, which are necessary to explain all physical phenomena in these compounds. In this work, we present the electronic, structural and magnetic phase diagram of perovskite manganites Sm 1 À x Sr x MnO 3 (0.16 rxr0.67) constructed using the results of our long-term systematic studies of this system by highresolution neutron powder diffraction on samples synthesized using 152 Sm and 154 Sm isotopes reported previously [1][2][3][4][5][6][7][8][9][10] as well as new unreported data.…”