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Pis'ma v Zh. Èksper. Teoret. Fiz., 2009, Volume 89, Issue 6, Pages 350–355 (Mi jetpl390)  

This article is cited in 4 scientific papers (total in 4 papers)

CONDENSED MATTER

Phase transition in nanostructured LaMnO$_3$

M. V. Kharlamovaa, A. Arulrajb

a Faculty of Materials Science, MSU
b Hahn-Meitner-Institut, Berlin, Germany

Abstract: Nanocrystalline LaMnO3 samples have been synthesized by the coprecipitation of lanthanum and manganese salt solutions followed by annealing at 800°C in air and then in an argon flow. With the use of X-ray and neutron diffraction analysis, it has been found that the resulting samples had an orthorhombic crystal structure (space group Pbnm). In the nanocrystalline LaMnO3 samples, an order-disorder phase transition from the low-temperature phase to the high-temperature phase occurs at (220 ± 10)°C, which is much lower than the value of 477°C for bulk LaMnO3. The phase transition is due to the removal of the Jahn-Teller distortion of the Mn3+O6 oxygen octahedrons and is accompanied by a decrease in the unit cell volume of lanthanum manganite over a narrow temperature range.

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English version:
Journal of Experimental and Theoretical Physics Letters, 2009, 89:6, 301–305

Bibliographic databases:

PACS: 64.70.Nd
Received: 05.11.2008
Revised: 16.02.2009

Citation: M. V. Kharlamova, A. Arulraj, “Phase transition in nanostructured LaMnO$_3$”, Pis'ma v Zh. Èksper. Teoret. Fiz., 89:6 (2009), 350–355; JETP Letters, 89:6 (2009), 301–305

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    This publication is cited in the following articles:
    1. Dhital Ch., de la Cruz C., Opeil C., Treat A., Wang K.F., Liu J.-M., Ren Z.F., Wilson S.D., “Neutron scattering study of magnetic phase separation in nanocrystalline La5/8Ca3/8MnO3”, Physical Review B, 84:14 (2011), 144401  crossref  adsnasa  isi  elib  scopus
    2. Das S., Amaral J.S., De K., Willinger M., Goncalves J.N., Roy A., Dhak P., Giri S., Majumder S., Silva C.J.R., Gomes M.J.M., Mahapatra P.K., Amaral V.S., “Strain Induced Enhanced Ferromagnetic Behavior in Inhomogeneous Low Doped La0.95Sr0.05Mno3+Delta”, Appl. Phys. Lett., 102:11 (2013), 112408  crossref  adsnasa  isi  elib  scopus
    3. Ghosh B., Siruguri V., Raychaudhuri A.K., Chatterji T., “Effect of Size Reduction on the Structural and Magnetic Order in Lamno3+Delta (Delta Approximate to 0.03) Nanocrystals: a Neutron Diffraction Study”, J. Phys.-Condes. Matter, 26:2 (2014), 025603  crossref  adsnasa  isi  scopus
    4. Thi Ha Tran, Thanh Cong Bach, Nguyen Hai Pham, Quang Hoa Nguyen, Cong Doanh Sai, Hoang Nam Nguyen, Viet Tuyen Nguyen, Trong Tam Nguyen, Khac Hieu Ho, Quoc Khoa Doan, “Phase Transition of Lamno3 Nanoparticles Prepared By Microwave Assisted Combustion Method”, Mater. Sci. Semicond. Process, 89 (2019), 121–125  crossref  isi  scopus
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