کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1799712 | 1524866 | 2014 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Magnetic ordering in NdMn2O5 studied by the neutron diffraction Magnetic ordering in NdMn2O5 studied by the neutron diffraction](/preview/png/1799712.png)
• The magnetic order in NdMn2O5 is non-commensurate at all temperatures of magnetic alignment.
• The magnetic phase diagram of NdMn2O5is characterized by two coexisting propagation vectors k1=(0.5 0 kz1), k2=(0.5 0 kz2).
• There are two reorientation transitions below TN=30 K.
• The orientation of the magnetic helicoid has significant component along c-axis at all temperatures.
The magnetic ordering in NdMn2O5 single crystal has been studied by the neutron scattering, including XYZ-polarization analysis. At TN≈30 K the onset of the long-range magnetic order with incommensurate wave vector k=(0.5 0 ~0.36) is observed. Below 30 K two magnetic phases are observed with propagation vectors close to each other: k1=(0.5 0 kz1), k2=(0.5 0 kz2). kz1, kz2 components increase monotonously with temperature decrease down to 25 K, then remain to be constant with values kz1=0.384(2), kz2=0.395(2). Two reorientation transitions were observed at ~20 K and at ~5 K.
Journal: Journal of Magnetism and Magnetic Materials - Volume 354, March 2014, Pages 85–89