# name
Magnetic order or charge-density wave in La2NiO4 by Mössbauer spectroscopy

# metadata.dc.description.abstract[].value
Measurements of Mössbauer absorption spectra of 
57
Fe
: 
La
2
Ni
O
4
 at 297, 77, and 4.2 K provide evidence, at the lowest temperatures, of magnetic order in a sample containing 
57
Fe
3
+
-ion impurities and some 
La
2
+
n
Ni
1
+
n
O
4
+
3
n
 intergrowth. Mössbauer emission spectra of 
57
Co
: 
La
2
Ni
O
4
 at 77 and 4.2 K show magnetic order coexisting with paramagnetism in a sample containing a small concentration of 
57
Co
-ion impurities and some 
La
2
+
n
Ni
1
+
n
O
4
+
3
n
 intergrowth. These results are interpreted as evidence for competition between magnetic ordering and charge-density-wave formation among electrons of a narrow 
σ
∗
x
2
−
y
2
 band; intergrowths, impurities, and nonstoichiometry favor magnetic ordering.

# metadata.dc.relation.isformatof[].value
Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.30.6320

# metadata.dc.source[].value
Articles publicats en revistes (Física de la Matèria Condensada)

# metadata.dc.title[].value
Magnetic order or charge-density wave in La2NiO4 by Mössbauer spectroscopy