Synthesis and characterization of Ca-doped LaMnAsO
Abstract
Here, we report on our attempt to hole-dope the antiferromagnetic semiconductor LaMnAsO by substitution of the La3+ site by Ca2+. We use neutron and x-ray diffraction, magnetic susceptibility, and transport techniques to characterize polycrystalline (La1–xCax)MnAsO samples prepared by solid-state reaction and find that the parent compound is highly resistant to substitution with an upper limit x ≤ 0.01. Magnetic susceptibility of the parent and the x = 0.002(xnom = 0.04) compounds indicate a negligible presence of magnetic impurities (i.e., MnO or MnAs). Rietveld analysis of neutron and x-ray diffraction data shows the preservation of both the tetragonal (P4/nmm) structure upon doping and the antiferromagnetic ordering temperature, TN = 355 ± 5 K.
- Authors:
-
- Ames Lab. and Iowa State Univ., Ames, IA (United States)
- Univ. of Missouri, Columbia, MO (United States)
- Publication Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1441003
- Alternate Identifier(s):
- OSTI ID: 1437677
- Report Number(s):
- IS-J-9679
Journal ID: ISSN 2475-9953; PRMHAR; TRN: US1900862
- Grant/Contract Number:
- AC02-07CH11358
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Materials
- Additional Journal Information:
- Journal Volume: 2; Journal Issue: 5; Journal ID: ISSN 2475-9953
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Liu, Yong, Straszheim, Warren E., Das, Pinaki, Islam, Farhan, Heitmann, Thomas W., McQueeney, Robert J., and Vaknin, David. Synthesis and characterization of Ca-doped LaMnAsO. United States: N. p., 2018.
Web. doi:10.1103/PhysRevMaterials.2.054410.
Liu, Yong, Straszheim, Warren E., Das, Pinaki, Islam, Farhan, Heitmann, Thomas W., McQueeney, Robert J., & Vaknin, David. Synthesis and characterization of Ca-doped LaMnAsO. United States. https://doi.org/10.1103/PhysRevMaterials.2.054410
Liu, Yong, Straszheim, Warren E., Das, Pinaki, Islam, Farhan, Heitmann, Thomas W., McQueeney, Robert J., and Vaknin, David. Fri .
"Synthesis and characterization of Ca-doped LaMnAsO". United States. https://doi.org/10.1103/PhysRevMaterials.2.054410. https://www.osti.gov/servlets/purl/1441003.
@article{osti_1441003,
title = {Synthesis and characterization of Ca-doped LaMnAsO},
author = {Liu, Yong and Straszheim, Warren E. and Das, Pinaki and Islam, Farhan and Heitmann, Thomas W. and McQueeney, Robert J. and Vaknin, David},
abstractNote = {Here, we report on our attempt to hole-dope the antiferromagnetic semiconductor LaMnAsO by substitution of the La3+ site by Ca2+. We use neutron and x-ray diffraction, magnetic susceptibility, and transport techniques to characterize polycrystalline (La1–xCax)MnAsO samples prepared by solid-state reaction and find that the parent compound is highly resistant to substitution with an upper limit x ≤ 0.01. Magnetic susceptibility of the parent and the x = 0.002(xnom = 0.04) compounds indicate a negligible presence of magnetic impurities (i.e., MnO or MnAs). Rietveld analysis of neutron and x-ray diffraction data shows the preservation of both the tetragonal (P4/nmm) structure upon doping and the antiferromagnetic ordering temperature, TN = 355 ± 5 K.},
doi = {10.1103/PhysRevMaterials.2.054410},
journal = {Physical Review Materials},
number = 5,
volume = 2,
place = {United States},
year = {Fri May 18 00:00:00 EDT 2018},
month = {Fri May 18 00:00:00 EDT 2018}
}
Web of Science
Figures / Tables:
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