Study of structural, transport and magneto-crystalline anisotropy in La1-xSrxMnO3 (0.30 ≤ x ≤ 0.40) perovskite manganites
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 R c 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 K12 = (105/8)bMs2 and is in the order of 105 erg/cm3.
- Authors:
-
- Maharaja Inst. of Technology Mysore (Aff. VTU-Belagavi), Karnataka (India)
- Ames Lab., Ames, IA (United States)
- Publication Date:
- Research Org.:
- Ames Lab., Ames, IA (United States)
- Sponsoring Org.:
- Science and Engineering Research Board (SERB); UGC-DAE-Consortium for Scientific Research; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1769020
- Report Number(s):
- IS-J-10,430
Journal ID: ISSN 2158-3226; TRN: US2207184
- Grant/Contract Number:
- EMR/2016/005424; CSR-IC/CRS-89/2014-2019
- Resource Type:
- Accepted Manuscript
- Journal Name:
- AIP Advances
- Additional Journal Information:
- Journal Volume: 11; Journal Issue: 2; Conference: 65. Annual Conference on Magnetism and Magnetic Materials (MMM 2020), Palm Beach (held virtually), FL (United States), 2-6 Nov 2020; Journal ID: ISSN 2158-3226
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Exchange interactions; Magnetic ordering; Phase transitions; X-ray photoelectron spectroscopy; Perovskites; X-ray diffraction; Magnetic materials
Citation Formats
Channagoudra, Ganesha, Gupta, Shalabh, and Dayal, Vijaylakshmi. Study of structural, transport and magneto-crystalline anisotropy in La1-xSrxMnO3 (0.30 ≤ x ≤ 0.40) perovskite manganites. United States: N. p., 2021.
Web. doi:10.1063/9.0000119.
Channagoudra, Ganesha, Gupta, Shalabh, & Dayal, Vijaylakshmi. Study of structural, transport and magneto-crystalline anisotropy in La1-xSrxMnO3 (0.30 ≤ x ≤ 0.40) perovskite manganites. United States. https://doi.org/10.1063/9.0000119
Channagoudra, Ganesha, Gupta, Shalabh, and Dayal, Vijaylakshmi. Wed .
"Study of structural, transport and magneto-crystalline anisotropy in La1-xSrxMnO3 (0.30 ≤ x ≤ 0.40) perovskite manganites". United States. https://doi.org/10.1063/9.0000119. https://www.osti.gov/servlets/purl/1769020.
@article{osti_1769020,
title = {Study of structural, transport and magneto-crystalline anisotropy in La1-xSrxMnO3 (0.30 ≤ x ≤ 0.40) perovskite manganites},
author = {Channagoudra, Ganesha and Gupta, Shalabh and Dayal, Vijaylakshmi},
abstractNote = {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 R3-c 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 K12 = (105/8)bMs2 and is in the order of 105 erg/cm3.},
doi = {10.1063/9.0000119},
journal = {AIP Advances},
number = 2,
volume = 11,
place = {United States},
year = {Wed Feb 03 00:00:00 EST 2021},
month = {Wed Feb 03 00:00:00 EST 2021}
}
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