Publication Date

2-3-2021

Department

Ames Laboratory

Campus Units

Ames Laboratory

OSTI ID+

1769020

Report Number

IS-J 10430

DOI

10.1063/9.0000119

Journal Title

AIP Advances

Volume Number

11

Issue Number

2

First Page

025305

Abstract

In this paper we present structural, transport, magnetic and magneto-crystalline anisotropy of La1−xSrxMnO3 (х = 0.30, 0.33, 0.36, and 0.40) synthesized using the solid-state reaction method. The X-ray diffraction pattern of the samples is well indexed to the rhombohedral structure with R3c space group. Lattice parameters and unit cell volume are found to decrease monotonically upon increasing Sr2+ concentration at La3+ site. X-ray photoelectron spectroscopy confirms the presence of Mn4+ and Mn3+, the ratio of which (Mn4+/Mn3+) increases from 0.44 to 0.64 with increasing Sr2+ concentration. From the ρ(T) and M(T) data analysis, we find that TMI and MS are larger for x = 0.33 composition, suggesting a weakening of the double-exchange interaction due to competing super-exchange interactions in x = 0.30, 0.36 and 0.40 samples. We calculated MCA constant (K1) by fitting the saturation magnetisation data at a higher magnetic field using the law of approach model, M = MS [1-a/H-b/H2]-χH with K1 2 = (105/8)bMs2 and is in the order of 105 erg/cm3.

Language

en

Publisher

Iowa State University Digital Repository, Ames IA (United States)

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