Abstract
Previously, we reported that inorganic–organic hybrid (C6H5CH2CH2NH3)2MnCl4 (Mn-PEA) is antiferromagnetic below 44 K by using magnetic susceptibility and neutron diffraction measurements. Generally, when an antiferromagnetic system is investigated by the neutron diffraction method, half-integer forbidden peaks, which indicate an enlargement of the magnetic cell compared to the chemical cell, should be present. However, in the case of the title compound, integer forbidden peaks are observed, suggesting that the size of the magnetic cell is the same as that of the chemical cell. This phenomenon was until now only theoretically predicted. During our former study, using an irreducible representation method, we suggested that four spin arrangements could be possible candidates and a magnetic cell and chemical cell should coincide. Recently, a magnetic structure analysis employing a magnetic space group has been developed. To confirm our former result by the representation method, in this work we employed a magnetic space group concept, and from this analysis, we show that the magnetic cell must coincide with the nuclear cell because only the Black–White 1 group (equi-translation or same translation group) is possible.
Highlights
Nowadays, inorganic–organic hybrid materials attract special interest because of their versatile application possibilities, including their use in solar cells, multi-ferroic properties and low-dimensional magnetism [1,2,3,4]
In our previous works using magnetic susceptibility measurements and neutron diffraction In our previous works using magnetic susceptibility measurements and neutron diffraction experiments, we claimed that the antiferromagnetic ordering in Mn-PEA is along the c-axis
We claimed that the antiferromagnetic ordering in Mn-PEA is along the c-axis
Summary
Inorganic–organic hybrid materials attract special interest because of their versatile application possibilities, including their use in solar cells, multi-ferroic properties and low-dimensional magnetism [1,2,3,4]. Co-PEA crystallizes in a monoclinic space group P121 /c1 (No 14), and shows no magnetic ordering at all at low temperature. ABX3 type is a3-dimensional and A2 BX is a double layered type Both of antiferromagnetic andknown an antiferromagnetic system is more suitable handling with the abovementioned and Mn-PEA are of a magnetically phase below a certain temperature, neutron diffractionCu-PEA techniques. In general,ordered an antiferromagnetic system shows we prefer Mn-PEA, because is antiferromagnetic and an antiferromagnetic system forbidden half-integer peaks Mn-PEA below a magnetic transition temperature. Mn-PEA shows spin cantingisdue to DMthe interactions causes acell weak-ferromagnetism or chemical ferrimagnetism [6] Study, we used a magnetic space group concept, and from this in Mn-PEA is the samemethod, as a chemical analysis, we will show that the magnetic cell in Mn-PEA is the same as a chemical cell
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