Lanthanum manganese (III) oxide

Crystal structure
__ La 3+      __ Mn 3+      __ O 2−
General
Surname	Lanthanum manganese (III) oxide
other names	Lanthanum manganite Lanthanum manganate
Ratio formula	LaMnO 3
Brief description	gray odorless solid
External identifiers / databases
CAS number 12031-12-8 PubChem 92027080 Wikidata Q18345146
properties
Molar mass	241.8 g mol −1
Physical state	firmly
solubility	practically insoluble in water
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 315-319-312-335 P: 260-280-305 + 351 + 338-304 + 340-405-501
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Lanthanum manganese (III) oxide is an inorganic chemical compound belonging to the manganite group .

Extraction and presentation

Lanthanum manganese (III) oxide can be obtained by reacting manganese carbonate dihydrate or manganese (III) oxide with lanthanum oxide in the air.

${\displaystyle \mathrm {\ 2\ La_{2}O_{3}+4\ MnCO_{3}+O_{2}\longrightarrow 4\ LaMnO_{3}+\ 4\ CO_{2}} }$

${\displaystyle \mathrm {La_{2}O_{3}+Mn_{2}O_{3}\longrightarrow \ 2\ LaMnO_{3}} }$

properties

Lanthanum manganese (III) oxide is a gray, odorless solid that is practically insoluble in water. It has an orthorhombic crystal structure of the distorted perovskite type with the space group Pnma (space group no. 62) . There are also non-stoichiometric forms (LaMn _1-x O _{3 + x / 2} (x <0.46) with the same structure. There is also a phase with the space group R 3 c (space group no. 167) . Lanthanum manganese (III ) oxide is an antiferromagnetic insulator and the superordinate compound of colossal magnetoresistive materials .

use

Lanthanum manganese (III) oxide is used as a sputtering material.

Individual evidence

1. ↑ ^{a b c d e f g} LTS Research Laboratories: Safety Data Sheet - Lanthanum Manganese Oxide , accessed on December 27, 2019.
2. ↑ Maria Baldini, Takaki Muramatsu, Mohammad Sherafati, Ho-kwang Mao, Lorenzo Malavasi, Paolo Postorino, Sashi Satpathy, Viktor V. Struzhkin: Origin of colossal magnetoresistance in LaMnO manganite. In: Proceedings of the National Academy of Sciences. 112, 2015, p. 10869, doi : 10.1073 / pnas.1424866112 .
3. ↑ ^{a b} Jane E. Macintyre: Dictionary of Inorganic Compounds . CRC Press, 1992, ISBN 978-0-412-30120-9 , pp. 3546 ( limited preview in Google Book Search).
4. ↑ MN Iliev, MV Abrashev, H.-G. Lee, VN Popov, YY Sun, C. Thomsen, RL Meng, CW Chu: Raman spectroscopy of orthorhombic Perovskitelike YMnO ₃ and LaMnO ₃ . In: Physical Review B. 57, 1998, p. 2872, doi : 10.1103 / PhysRevB.57.2872 .
5. ↑ P. Norby, IGKrogh Andersen, E. Krogh Andersen, NH Andersen: The crystal structure of lanthanum manganate (iii), LaMnO3, at room temperature and at 1273 K under N2. In: Journal of Solid State Chemistry. 119, 1995, p. 191, doi : 10.1016 / 0022-4596 (95) 80028-N .
6. ^ I. Chatterjee: Magnetic properties of LaMnO3. In: physica status solidi. 196, p. 267, doi : 10.1002 / pssa.200306403 .
7. ↑ sputtertargets.net: Lanthanum Manganate (LaMnO3) Sputtering Target | Alloy Sputter Targets  ( page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. , accessed on May 31, 2017