Pressure-induced crossover from two- to three-dimensional magnetic correlations in La1.4Sr1.6Mn2O7 manganite
UNSPECIFIED (2002) Pressure-induced crossover from two- to three-dimensional magnetic correlations in La1.4Sr1.6Mn2O7 manganite. In: 39th European High Pressure Research Group Meeting on Advanves on High Pressure Research (EHPRHG'39), SANTANDER, SPAIN, SEP 16-19, 2001. Published in: HIGH PRESSURE RESEARCH, 22 (1 Sp. Iss. SI). pp. 135-138.Full text not available from this repository.
Official URL: http://dx.doi.org/10.1080/08957950290003076
Magnetic pressure-temperature phase diagram of La1.4Sr1.6Mn2O7 layered manganese oxide has been studied by neutron diffraction. Three phases have been found in this compound at ambient pressure: high-temperature phase with quasi two-dimensional correlations of the magnetic moments on Mn sites and two low-temperature phases with long-range order - antiferromagnetic and ferromagnetic. Under hydrostatic pressure the antiferromagnetic phase is favoured with respect to the two-dimensional and long-range ferromagnetic phases. The magnetic phase with two-dimensional correlations is thus suppressed by the anti ferromagnetic phase with long-range order. We discuss this result in terms of the pressure-induced electron transfer and compare our conclusions with predictions given by theoretical calculations.
|Item Type:||Conference Item (UNSPECIFIED)|
|Subjects:||Q Science > QC Physics|
|Journal or Publication Title:||HIGH PRESSURE RESEARCH|
|Publisher:||TAYLOR & FRANCIS LTD|
|Number:||1 Sp. Iss. SI|
|Number of Pages:||4|
|Page Range:||pp. 135-138|
|Title of Event:||39th European High Pressure Research Group Meeting on Advanves on High Pressure Research (EHPRHG'39)|
|Location of Event:||SANTANDER, SPAIN|
|Date(s) of Event:||SEP 16-19, 2001|
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