Influence of pressure on structural and magnetic phase transitions in La0.835Sr0.165MnO3

K Kamenev, G Balakrishnan, M R Lees, D M Paul, Z Arnold, O Mikulina

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Abstract / Description of output

Measurements of the thermal expansion of a single crystal of La0.835Sr0.165MnO3 were performed under hydrostatic pressure of up to 9 kbar. The P-T phase diagram is established for the structural and magnetic phase transitions. Pressure is found to enhance the ferromagnetic coupling and to weaken the stability of the low-temperature orthorhombic phase by reducing the bending of the Mn-O-Mn bond. The decrease in the temperature Ts of the structural phase transition and the increase in the Curie temperature with increasing pressure leads to the two phase boundaries crossing at a pressure of about 3 kbar. The peculiar behavior of the Ts and Te in the vicinity of the crossing point demonstrates a strong coupling between structural distortion and magnetic ordering in the La0.835Sr0.165MnO3 compound.

Original languageEnglish
Pages (from-to)2285-2287
Number of pages3
JournalPhysical review B
Issue number5
Publication statusPublished - 1 Aug 1997

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