TY - JOUR
T1 - Antiferromagnetic order in Ca2CuO2Cl2, Sr2CuO2Cl2 and Sr2CuO3+x
AU - Hechel, D.
AU - Felner, I.
PY - 1994/12
Y1 - 1994/12
N2 - The magnetic order in the tetragonal M2CuO2Cl2, M=Ca,Sr and in Sr2CuO3+x compounds was studied by using Mossbauer spectroscopy of 0.5% 57Fe-doped samples. These compounds crystallize in a K2NiF4 - type tetragonal structure, isostructural to La2-xSrxCuO4 superconductors. In this structure, one crystallographic site exists for copper atoms, which form CuO2 planes. Sr2CuO3 prepared under ambient pressure has an orthorhombic structure, while the tetragonal Sr2CuO3+x is obtained when prepared under high oxygen pressure. Both copperoxychlorides are antiferromagnetically ordered with TN≈260K, very similar to TN in La2CuO4 or Nd2CuO4. The strontium-cuprates are magnetically ordered at 4.2K with TN below 10K.
AB - The magnetic order in the tetragonal M2CuO2Cl2, M=Ca,Sr and in Sr2CuO3+x compounds was studied by using Mossbauer spectroscopy of 0.5% 57Fe-doped samples. These compounds crystallize in a K2NiF4 - type tetragonal structure, isostructural to La2-xSrxCuO4 superconductors. In this structure, one crystallographic site exists for copper atoms, which form CuO2 planes. Sr2CuO3 prepared under ambient pressure has an orthorhombic structure, while the tetragonal Sr2CuO3+x is obtained when prepared under high oxygen pressure. Both copperoxychlorides are antiferromagnetically ordered with TN≈260K, very similar to TN in La2CuO4 or Nd2CuO4. The strontium-cuprates are magnetically ordered at 4.2K with TN below 10K.
UR - http://www.scopus.com/inward/record.url?scp=0038214190&partnerID=8YFLogxK
U2 - 10.1016/0921-4534(94)92026-5
DO - 10.1016/0921-4534(94)92026-5
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AN - SCOPUS:0038214190
SN - 0921-4534
VL - 235-240
SP - 1601
EP - 1602
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - PART 3
ER -