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

Title: Anomalous Composition-Induced Crossover in the Magnetic Properties of the Itinerant-Electron Antiferromagnet Ca 1 - x Sr x Co 2 - y As 2

Journal Article · · Physical Review Letters
 [1];  [2];  [2];  [3]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  2. Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States). Department of Materials Science and Engineering
  3. Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States). Department of Physics and Astronomy
+ Show Author Affiliations

We report the inference of Ying et al. [Europhys. Lett. 104, 67005 (2013)] of a composition-induced change from c-axis ordered-moment alignment in a collinear A-type antiferromagnetic (AFM) structure at small x to ab-plane alignment in an unknown AFM structure at larger x in Ca1-xSrxCo2-yAs2 with the body-centered tetragonal ThCr2Si2 structure is confirmed. Our major finding is an anomalous magnetic behavior in the crossover region 0.2 ≲ x ≲ 0.3 between these two phases. Also, in this region the magnetic susceptibility vs temperature χab(T) measured with magnetic fields H applied in the ab plane exhibit typical AFM behaviors with cusps at the Néel temperatures of ~ 65 K, whereas χc(T) and the low-temperature isothermal magnetization Mc(H) with H aligned along the c axis exhibit extremely soft ferromagneticlike behaviors.

Research Organization:
Ames Lab., Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1417345
Alternate ID(s):
OSTI ID: 1414334
Report Number(s):
IS-J-9486; PRLTAO; TRN: US1801033
Journal Information:
Physical Review Letters, Vol. 119, Issue 25; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

References (39)

Antiferromagnetic order and spin dynamics in iron-based superconductors journal August 2015
Crystallographic, electronic, thermal, and magnetic properties of single-crystal SrCo 2 As 2 journal July 2013
EuCo 2 P 2 : A model molecular-field helical Heisenberg antiferromagnet journal July 2016
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
Magnetic dipole interactions in crystals journal January 2016
Muon spin rotation study of the magnetic structure in the tetragonal antiferromagnetic state of weakly underdoped Ba 1− x K x Fe 2 As 2 journal September 2015
Superconductivity-induced re-entrance of the orthorhombic distortion in Ba1−xKxFe2As2 journal July 2015
Metamagnetic transition in Ca 1 − x Sr x Co 2 As 2 ( x = 0 and 0.1) single crystals journal June 2012
Field-induced spin-flop transitions in single-crystalline CaCo 2 As 2 journal April 2012
Double-Q spin-density wave in iron arsenide superconductors journal January 2016
Interplay between tetragonal magnetic order, stripe magnetism, and superconductivity in iron-based materials journal March 2015
Comparison of silver and molybdenum microfocus X-ray sources for single-crystal structure determination journal January 2015
Magnetic Susceptibility of Collinear and Noncollinear Heisenberg Antiferromagnets journal August 2012
Investigation of electronic structure and magnetic properties of CaCo 1.86 As 2 within the CPA method journal January 2015
The magnetic phase diagram of Ca 1−x Sr x Co 2 As 2 single crystals journal December 2013
Competing magnetic double- Q phases and superconductivity-induced reentrance of C 2 magnetic stripe order in iron pnictides journal October 2015
3 d magnetism in ThCo 2 Sn 2 single crystals journal March 2015
Observation of the magnetic C 4 phase in Ca 1 − x Na x Fe 2 As 2 and its universality in the hole-doped 122 superconductors journal February 2017
Crystal structure refinement with SHELXL journal January 2015
Detailed magnetic and structural analysis mapping a robust magnetic C 4 dome in Sr 1 − x Na x Fe 2 As 2 journal April 2016
Unified molecular field theory for collinear and noncollinear Heisenberg antiferromagnets journal February 2015
Spin reorientation in Ba 0.65 Na 0.35 Fe 2 As 2 studied by single-crystal neutron diffraction journal February 2015
Crystal growth and physical properties of SrCu 2 As 2 , SrCu 2 Sb 2 , and BaCu 2 Sb 2 journal June 2012
Crystal and magnetic structure of CaCo 1.86 As 2 studied by x-ray and neutron diffraction journal November 2013
Vestigial chiral and charge orders from bidirectional spin-density waves: Application to the iron-based superconductors journal January 2016
Collective magnetic excitations of C 4 -symmetric magnetic states in iron-based superconductors journal November 2016
Disorder-promoted C 4 -symmetric magnetic order in iron-based superconductors journal April 2016
Superconductivity in iron compounds journal December 2011
What drives nematic order in iron-based superconductors? journal January 2014
Spin-flop transition and magnetic phase diagram in CaCo 2 As 2 revealed by torque measurements journal October 2015
SHELXT – Integrated space-group and crystal-structure determination journal January 2015
Infrared Study of the Spin Reorientation Transition and Its Reversal in the Superconducting State in Underdoped Ba 1 − x K x Fe 2 As 2 journal July 2015
Stripe Antiferromagnetic Spin Fluctuations in SrCo 2 As 2 journal October 2013
Physical properties of metallic antiferromagnetic CaCo 1.86 As 2 single crystals journal June 2014
Spin reorientation driven by the interplay between spin-orbit coupling and Hund's rule coupling in iron pnictides journal December 2015
Electronic properties of 3 d transitional metal pnictides: A comparative study by optical spectroscopy journal October 2012
The puzzle of high temperature superconductivity in layered iron pnictides and chalcogenides journal October 2010
Colloquium : The unexpected properties of alkali metal iron selenide superconductors journal May 2013
Magnetically driven suppression of nematic order in an iron-based superconductor journal May 2014

Figures / Tables (35)

FIG. 1(p. 2)figure FIG. 1
FIG. 2(p. 3)figure FIG. 2
FIG. 3(p. 3)figure FIG. 3
FIG. 4(p. 4)figure FIG. 4
FIG. 5(p. 4)figure FIG. 5
TABLE I(p. 8)table TABLE I
TABLE II(p. 8)table TABLE II
FIG. 6(p. 9)figure FIG. 6
FIG. 7(p. 10)figure FIG. 7
TABLE III(p. 10)table TABLE III
FIG. 8(p. 11)figure FIG. 8
FIG. 9(p. 12)figure FIG. 9
TABLE IV(p. 13)table TABLE IV
FIG. 10(p. 14)figure FIG. 10
FIG. 11(p. 14)figure FIG. 11
FIG. 12(p. 15)figure FIG. 12
FIG. 13(p. 15)figure FIG. 13
FIG. 14(p. 16)figure FIG. 14
FIG. 15(p. 16)figure FIG. 15
FIG. 16(p. 17)figure FIG. 16
FIG. 17(p. 18)figure FIG. 17
FIG. 18(p. 19)figure FIG. 18
FIG. 19(p. 20)figure FIG. 19
FIG. 20(p. 21)figure FIG. 20
FIG. 21(p. 22)figure FIG. 21
FIG. 22(p. 23)figure FIG. 22
FIG. 23(p. 24)figure FIG. 23
FIG. 24(p. 25)figure FIG. 24
FIG. 25(p. 26)figure FIG. 25
FIG. 26(p. 27)figure FIG. 26
FIG. 27(p. 28)figure FIG. 27
FIG. 28(p. 29)figure FIG. 28
FIG. 29(p. 30)figure FIG. 29
FIG. 30(p. 31)figure FIG. 30
FIG. 31(p. 31)figure FIG. 31

Similar Records

Non-Fermi-liquid types of behavior associated with a magnetic quantum critical point in Sr(Co1-xNix)2As2 single crystals
Journal Article · Mon Sep 30 00:00:00 EDT 2019 · Physical Review B · OSTI ID:1417345
+6 more
Antiferromagnetism in semiconducting SrMn2Sb2 and BaMn2Sb2 single crystals
Journal Article · Wed Jan 03 00:00:00 EST 2018 · Physical Review B · OSTI ID:1417345
+1 more
Enhanced moments of Eu in single crystals of the metallic helical antiferromagnet EuCo2-yAs2
Journal Article · Fri Apr 06 00:00:00 EDT 2018 · Physical Review B · OSTI ID:1417345
+3 more

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS