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Title: Structure-property relationship in layered BaM n 2 S b 2 and B a 2 M n 3 S b 2 O 2

Journal Article · · Physical Review B
ORCiD logo [1];  [2]; ORCiD logo [3];  [2];  [2];  [2];  [2];  [2]
  1. Louisiana State Univ., Baton Rouge, LA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Louisiana State Univ., Baton Rouge, LA (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Layered transition-metal compounds have received great attention owing to their physical properties. In this work, we present the structural, electronic, thermal, and magnetic properties of BaMn2Sb2 and Ba2Mn3Sb2O2 single crystals, both with the layered structure analogous to high-temperature Cu- and Fe-based superconductors. While the Mn moment in the MnSb4 tetrahedral environment forms a long-range G-type antiferromagnetic (AFM) ordering in both BaMn2Sb2 (TN1≈443K) and Ba2Mn3Sb2O2 (TN1≈314K), a short-range AFM order is found in the intercalated MnO2 layer at a much lower temperature (TN2≈60K) coexisting with long-range G-type order in MnSb4 layer in Ba2Mn3Sb2O2. The directions of the ordered moments in these two magnetic sublattices of Ba2Mn3Sb2O2 are perpendicular to each other, even though the system is electrically conductive. The G-type AFM order in MnSb4 layers in both compounds is distinct from the stripe-like order in Fe-based superconductors, but the in-plane magnetic structure in MnO2 layers of Ba2Mn3Sb2O2 is found to be similar to that in the cuprates. Our study acknowledges the significant and distinct roles of the CuO2- and FeAs4-type transition metal layers in the structure and their magnetic and electronic properties.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725; SC0012432
OSTI ID:
1515656
Alternate ID(s):
OSTI ID: 1512538
Journal Information:
Physical Review B, Vol. 99, Issue 18; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

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