skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Antiferromagnetic stacking of ferromagnetic layers and doping-controlled phase competition in Ca 1 - x Sr x Co 2 - y As 2

Journal Article · · Physical Review B
 [1];  [1];  [1];  [1];  [2];  [3];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  2. Ames Lab. and Iowa State Univ., Ames, IA (United States); Washington State Univ., Pullman, WA (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

In search of a quantum phase transition between the two-dimensional ( 2 D ) ferromagnetism of CaCo 2 - y As 2 and stripe-type antiferromagnetism in SrCo 2 As 2 , we instead find evidence for 1 D magnetic frustration between magnetic square Co layers. We present neutron-diffraction data for Ca 1 - x Sr x Co 2 - y As 2 that reveal a sequence of x -dependent magnetic transitions which involve different stacking of 2 D ferromagnetically aligned layers with different magnetic anisotropy. We explain the x -dependent changes to the magnetic order by utilizing classical analytical calculations of a 1 D Heisenberg model where single-ion magnetic anisotropy and frustration of antiferromagnetic nearest- and next-nearest-layer exchange interactions are all composition dependent.

Research Organization:
Ames Lab., Ames, IA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-07 CH11358; AC2-06 CH11357; AC05-00OR22725
OSTI ID:
1542872
Alternate ID(s):
OSTI ID: 1543200; OSTI ID: 1546435
Report Number(s):
IS-J-9975; PRBMDO
Journal Information:
Physical Review B, Vol. 100, Issue 2; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

References (43)

The puzzle of high temperature superconductivity in layered iron pnictides and chalcogenides journal October 2010
Making and Breaking Bonds in the Solid State: The ThCr 2 Si 2 Structure journal September 1985
Lattice collapse and the magnetic phase diagram of Sr 1 x Ca x Co 2 P 2 journal October 2009
Crystallographic, electronic, thermal, and magnetic properties of single-crystal SrCo 2 As 2 journal July 2013
Physical properties of metallic antiferromagnetic CaCo 1.86 As 2 single crystals journal June 2014
Renormalized behavior and proximity of BaCo 2 As 2 to a magnetic quantum critical point journal January 2009
Magnetic properties of exchange-enhanced Pauli paramagnetic metals Ae Co 2 P 2 ( Ae = Sr, Ba) journal June 2017
Stripe Antiferromagnetic Spin Fluctuations in SrCo 2 As 2 journal October 2013
Effective One-Dimensional Coupling in the Highly Frustrated Square-Lattice Itinerant Magnet CaCo 2 y As 2 journal October 2017
Antiferromagnetic order in the ThCr2Si2 type phosphides CaCo2P2 and CeCo2P2 journal February 1998
Neutron studies of the iron-based family of high TC magnetic superconductors journal May 2009
High-temperature superconductivity in iron-based materials journal August 2010
FeAs-Based Superconductivity: A Case Study of the Effects of Transition Metal Doping on BaFe 2 As 2 journal August 2010
Superconductivity in iron compounds journal December 2011
Crystal and magnetic structure of CaCo 1.86 As 2 studied by x-ray and neutron diffraction journal November 2013
Suppression of magnetic order in CaCo 1.86 As 2 with Fe substitution: Magnetization, neutron diffraction, and x-ray diffraction studies of Ca ( Co 1 x Fe x ) y As 2 journal February 2017
Anomalous Composition-Induced Crossover in the Magnetic Properties of the Itinerant-Electron Antiferromagnet Ca 1 x Sr x Co 2 y As 2 journal December 2017
VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data journal October 2011
The magnetic phase diagram of Ca 1−x Sr x Co 2 As 2 single crystals journal December 2013
Linear Antiferromagnetic Chain with Anisotropic Coupling journal October 1958
One-Dimensional Chain of Anisotropic Spin-Spin Interactions. I. Proof of Bethe's Hypothesis for Ground State in a Finite System journal October 1966
One-Dimensional Chain of Anisotropic Spin-Spin Interactions. II. Properties of the Ground-State Energy Per Lattice Site for an Infinite System journal October 1966
One-Dimensional Chain of Anisotropic Spin-Spin Interactions. III. Applications journal November 1966
One-dimensional anisotropic Heisenberg chain journal April 1972
Field-induced spin-flop transitions in single-crystalline CaCo 2 As 2 journal April 2012
Metamagnetic transition in Ca 1 x Sr x Co 2 As 2 ( x = 0 and 0.1) single crystals journal June 2012
Spin-flop transition and magnetic phase diagram in CaCo 2 As 2 revealed by torque measurements journal October 2015
Magnetic Susceptibility of Collinear and Noncollinear Heisenberg Antiferromagnets journal August 2012
Unified molecular field theory for collinear and noncollinear Heisenberg antiferromagnets journal February 2015
Influence of uniaxial single-ion anisotropy on the magnetic and thermal properties of Heisenberg antiferromagnets within unified molecular field theory journal March 2017
Magnetic structure and magnetization of z -axis helical Heisenberg antiferromagnets with XY anisotropy in high magnetic fields transverse to the helix axis at zero temperature journal June 2019
Tuning magnetism in FeAs-based materials via a tetrahedral structure journal August 2012
Electronic structure and spin dynamics of A C o 2 A s 2 ( A = Ba , Sr , Ca ) journal September 2018
Lead palladium titanate: A room temperature nanoscale multiferroic thin film journal February 2020
One-Dimensional Anisotropic Heisenberg Chain journal April 1971
Neutron Studies of the Iron-based Family of High TC Magnetic Superconductors text January 2009
FeAs-based superconductivity: a case study of the effects of transition metal doping on BaFe2As2 text January 2010
High-temperature superconductivity in iron-based materials text January 2010
Superconductivity in Iron Compounds text January 2011
Tuning magnetism in FeAs-based materials via tetrahedral structure text January 2012
Unified Molecular Field Theory for Collinear and Noncollinear Heisenberg Antiferromagnets text January 2014
Influence of uniaxial single-ion anisotropy on the magnetic and thermal properties of Heisenberg antiferromagnets within unified molecular field theory text January 2017
Electronic structure and spin dynamics of ACo2As2 (A=Ba, Sr, Ca) text January 2018

Figures / Tables (4)