Synthesis, structure, and properties of tetragonal Sr2 M 3 As2 O2 ( M3 = Mn3, Mn2 Cu, and MnZn2) compounds containing alternating CuO2 -type and FeAs-type layers

R. Nath; V. O. Garlea; A. I. Goldman; D. C. Johnston

doi:10.1103/PhysRevB.81.224513

Synthesis, structure, and properties of tetragonal Sr₂ M ₃ As₂ O₂ ( M₃ = Mn₃, Mn₂ Cu, and MnZn₂) compounds containing alternating CuO₂ -type and FeAs-type layers

R. Nath
, V. O. Garlea
, A. I. Goldman
, D. C. Johnston

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

Abstract

Polycrystalline samples of Sr₂ Mn₂ CuAs₂ O₂, Sr₂ Mn₃ As₂ O₂, and Sr₂ Zn₂ MnAs₂ O₂ were synthesized. Their temperature- and applied magnetic field-dependent structural, transport, thermal, and magnetic properties were characterized by means of x-ray and neutron diffraction, electrical resistivity ρ, heat capacity, magnetization, and magnetic susceptibility measurements. These compounds have a body-centered-tetragonal crystal structure (space group I4/mmm) that consists of M O₂ (M=Zn and/or Mn) oxide layers similar to the CuO₂ layers in high superconducting transition temperature T_c cuprate superconductors, and intermetallic MAs (M=Cu and/or Mn) layers similar to the FeAs layers in high- T_c pnictides. These two types of layers alternate along the crystallographic c axis and are separated by Sr atoms. The site occupancies of Mn, Cu, and Zn were studied using Rietveld refinements of x-ray and neutron powder diffraction data. The temperature dependences of ρ suggest metallic character for Sr₂ Mn₂ CuAs₂ O₂ and semiconducting character for Sr₂ Mn₃ As₂ O₂ and Sr₂ Zn₂ MnAs₂ O₂. Sr₂ Mn₂ CuAs₂ O₂ is inferred to be a ferrimagnet with a Curie temperature T_C =95 (1) K. Remarkably, we find that the magnetic ground-state structure changes from a G -type antiferromagnetic structure in Sr₂ Mn₃ As ₂ O₂ to an A -type ferrimagnetic structure in Sr ₂ Mn₂ CuAs₂ O₂ in which the Mn ions in each layer are ferromagnetically aligned but are antiferromagnetically aligned between layers.

Original language	English
Article number	224513
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	81
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.81.224513
State	Published - Jun 15 2010

Access to Document

10.1103/PhysRevB.81.224513

Cite this

@article{1118c0b8f18f438d9a4074625bfb72ca,

title = "Synthesis, structure, and properties of tetragonal Sr2 M 3 As2 O2 ( M3 = Mn3, Mn2 Cu, and MnZn2) compounds containing alternating CuO2 -type and FeAs-type layers",

abstract = "Polycrystalline samples of Sr2 Mn2 CuAs2 O2, Sr2 Mn3 As2 O2, and Sr2 Zn2 MnAs2 O2 were synthesized. Their temperature- and applied magnetic field-dependent structural, transport, thermal, and magnetic properties were characterized by means of x-ray and neutron diffraction, electrical resistivity ρ, heat capacity, magnetization, and magnetic susceptibility measurements. These compounds have a body-centered-tetragonal crystal structure (space group I4/mmm) that consists of M O2 (M=Zn and/or Mn) oxide layers similar to the CuO2 layers in high superconducting transition temperature Tc cuprate superconductors, and intermetallic MAs (M=Cu and/or Mn) layers similar to the FeAs layers in high- Tc pnictides. These two types of layers alternate along the crystallographic c axis and are separated by Sr atoms. The site occupancies of Mn, Cu, and Zn were studied using Rietveld refinements of x-ray and neutron powder diffraction data. The temperature dependences of ρ suggest metallic character for Sr2 Mn2 CuAs2 O2 and semiconducting character for Sr2 Mn3 As2 O2 and Sr2 Zn2 MnAs2 O2. Sr2 Mn2 CuAs2 O2 is inferred to be a ferrimagnet with a Curie temperature TC =95 (1) K. Remarkably, we find that the magnetic ground-state structure changes from a G -type antiferromagnetic structure in Sr2 Mn3 As 2 O2 to an A -type ferrimagnetic structure in Sr 2 Mn2 CuAs2 O2 in which the Mn ions in each layer are ferromagnetically aligned but are antiferromagnetically aligned between layers.",

author = "R. Nath and Garlea, \{V. O.\} and Goldman, \{A. I.\} and Johnston, \{D. C.\}",

year = "2010",

month = jun,

day = "15",

doi = "10.1103/PhysRevB.81.224513",

language = "English",

volume = "81",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

number = "22",

}

Synthesis, structure, and properties of tetragonal Sr₂ M ₃ As₂ O₂ ( M₃ = Mn₃, Mn₂ Cu, and MnZn₂) compounds containing alternating CuO₂ -type and FeAs-type layers. / Nath, R.; Garlea, V. O.; Goldman, A. I. et al.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 81, No. 22, 224513, 15.06.2010.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Synthesis, structure, and properties of tetragonal Sr2 M 3 As2 O2 ( M3 = Mn3, Mn2 Cu, and MnZn2) compounds containing alternating CuO2 -type and FeAs-type layers

AU - Nath, R.

AU - Garlea, V. O.

AU - Goldman, A. I.

AU - Johnston, D. C.

PY - 2010/6/15

Y1 - 2010/6/15

N2 - Polycrystalline samples of Sr2 Mn2 CuAs2 O2, Sr2 Mn3 As2 O2, and Sr2 Zn2 MnAs2 O2 were synthesized. Their temperature- and applied magnetic field-dependent structural, transport, thermal, and magnetic properties were characterized by means of x-ray and neutron diffraction, electrical resistivity ρ, heat capacity, magnetization, and magnetic susceptibility measurements. These compounds have a body-centered-tetragonal crystal structure (space group I4/mmm) that consists of M O2 (M=Zn and/or Mn) oxide layers similar to the CuO2 layers in high superconducting transition temperature Tc cuprate superconductors, and intermetallic MAs (M=Cu and/or Mn) layers similar to the FeAs layers in high- Tc pnictides. These two types of layers alternate along the crystallographic c axis and are separated by Sr atoms. The site occupancies of Mn, Cu, and Zn were studied using Rietveld refinements of x-ray and neutron powder diffraction data. The temperature dependences of ρ suggest metallic character for Sr2 Mn2 CuAs2 O2 and semiconducting character for Sr2 Mn3 As2 O2 and Sr2 Zn2 MnAs2 O2. Sr2 Mn2 CuAs2 O2 is inferred to be a ferrimagnet with a Curie temperature TC =95 (1) K. Remarkably, we find that the magnetic ground-state structure changes from a G -type antiferromagnetic structure in Sr2 Mn3 As 2 O2 to an A -type ferrimagnetic structure in Sr 2 Mn2 CuAs2 O2 in which the Mn ions in each layer are ferromagnetically aligned but are antiferromagnetically aligned between layers.

AB - Polycrystalline samples of Sr2 Mn2 CuAs2 O2, Sr2 Mn3 As2 O2, and Sr2 Zn2 MnAs2 O2 were synthesized. Their temperature- and applied magnetic field-dependent structural, transport, thermal, and magnetic properties were characterized by means of x-ray and neutron diffraction, electrical resistivity ρ, heat capacity, magnetization, and magnetic susceptibility measurements. These compounds have a body-centered-tetragonal crystal structure (space group I4/mmm) that consists of M O2 (M=Zn and/or Mn) oxide layers similar to the CuO2 layers in high superconducting transition temperature Tc cuprate superconductors, and intermetallic MAs (M=Cu and/or Mn) layers similar to the FeAs layers in high- Tc pnictides. These two types of layers alternate along the crystallographic c axis and are separated by Sr atoms. The site occupancies of Mn, Cu, and Zn were studied using Rietveld refinements of x-ray and neutron powder diffraction data. The temperature dependences of ρ suggest metallic character for Sr2 Mn2 CuAs2 O2 and semiconducting character for Sr2 Mn3 As2 O2 and Sr2 Zn2 MnAs2 O2. Sr2 Mn2 CuAs2 O2 is inferred to be a ferrimagnet with a Curie temperature TC =95 (1) K. Remarkably, we find that the magnetic ground-state structure changes from a G -type antiferromagnetic structure in Sr2 Mn3 As 2 O2 to an A -type ferrimagnetic structure in Sr 2 Mn2 CuAs2 O2 in which the Mn ions in each layer are ferromagnetically aligned but are antiferromagnetically aligned between layers.

UR - https://www.scopus.com/pages/publications/77956323270

U2 - 10.1103/PhysRevB.81.224513

DO - 10.1103/PhysRevB.81.224513

M3 - Article

AN - SCOPUS:77956323270

SN - 1098-0121

VL - 81

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 22

M1 - 224513

ER -

Synthesis, structure, and properties of tetragonal Sr₂ M ₃ As₂ O₂ ( M₃ = Mn₃, Mn₂ Cu, and MnZn₂) compounds containing alternating CuO₂ -type and FeAs-type layers

Abstract

Access to Document

Other files and links

Fingerprint

Cite this