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Title: Physical properties of single crystalline R Mg 2 Cu 9 ( R = Y , Ce - Nd , Gd - Dy , Yb ) and the search for in-plane magnetic anisotropy in hexagonal systems

Single crystals of RMg 2Cu 9 (R=Y, Ce-Nd, Gd-Dy, Yb) were grown using a high-temperature solution growth technique and were characterized by measurements of room-temperature x-ray diffraction, temperature-dependent specific heat, and temperature- and field-dependent resistivity and anisotropic magnetization. YMg 2Cu 9 is a non-local-moment-bearing metal with an electronic specific heat coefficient, γ ~ 15 mJ/mol K 2. Yb is divalent and basically non-moment-bearing in YbMg2Cu9. Ce is trivalent in CeMg 2Cu 9 with two magnetic transitions being observed at 2.1 K and 1.5 K. PrMg 2Cu 9 does not exhibit any magnetic phase transition down to 0.5 K. The other members being studied ( R = Nd, Gd-Dy) all exhibit antiferromagnetic transitions at low temperatures ranging from 3.2 K for NdMg 2Cu 9 to 11.9 K for TbMg 2Cu 9. Whereas GdMg 2Cu 9 is isotropic in its paramagnetic state due to zero angular momentum ( L = 0), all the other local-moment-bearing members manifest an anisotropic, planar magnetization in their paramagnetic states. To further study this planar anisotropy, detailed angular-dependent magnetization was carried out on magnetically diluted (Y 0.99Tb 0.01)Mg 2Cu 9 and (Y 0.99Dy 0.01)Mg 2Cu 9. Despite the strong, planar magnetization anisotropy, the in-plane magnetic anisotropy ismore » weak and field-dependent. Finally, a set of crystal electric field parameters are proposed to explain the observed magnetic anisotropy.« less
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States)
Publication Date:
Report Number(s):
IS-J-9195
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1701336
Grant/Contract Number:
AC02-07CH11358; GBMF4411
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 94; Journal Issue: 14; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1347414
Alternate Identifier(s):
OSTI ID: 1329957

Kong, Tai, Meier, William R., Lin, Qisheng, Saunders, Scott M., Bud'ko, Sergey L., Flint, Rebecca, and Canfield, Paul C.. Physical properties of single crystalline RMg2Cu9 (R=Y,Ce-Nd,Gd-Dy,Yb) and the search for in-plane magnetic anisotropy in hexagonal systems. United States: N. p., Web. doi:10.1103/PhysRevB.94.144434.
Kong, Tai, Meier, William R., Lin, Qisheng, Saunders, Scott M., Bud'ko, Sergey L., Flint, Rebecca, & Canfield, Paul C.. Physical properties of single crystalline RMg2Cu9 (R=Y,Ce-Nd,Gd-Dy,Yb) and the search for in-plane magnetic anisotropy in hexagonal systems. United States. doi:10.1103/PhysRevB.94.144434.
Kong, Tai, Meier, William R., Lin, Qisheng, Saunders, Scott M., Bud'ko, Sergey L., Flint, Rebecca, and Canfield, Paul C.. 2016. "Physical properties of single crystalline RMg2Cu9 (R=Y,Ce-Nd,Gd-Dy,Yb) and the search for in-plane magnetic anisotropy in hexagonal systems". United States. doi:10.1103/PhysRevB.94.144434. https://www.osti.gov/servlets/purl/1347414.
@article{osti_1347414,
title = {Physical properties of single crystalline RMg2Cu9 (R=Y,Ce-Nd,Gd-Dy,Yb) and the search for in-plane magnetic anisotropy in hexagonal systems},
author = {Kong, Tai and Meier, William R. and Lin, Qisheng and Saunders, Scott M. and Bud'ko, Sergey L. and Flint, Rebecca and Canfield, Paul C.},
abstractNote = {Single crystals of RMg2Cu9 (R=Y, Ce-Nd, Gd-Dy, Yb) were grown using a high-temperature solution growth technique and were characterized by measurements of room-temperature x-ray diffraction, temperature-dependent specific heat, and temperature- and field-dependent resistivity and anisotropic magnetization. YMg2Cu9 is a non-local-moment-bearing metal with an electronic specific heat coefficient, γ ~ 15 mJ/mol K2. Yb is divalent and basically non-moment-bearing in YbMg2Cu9. Ce is trivalent in CeMg2Cu9 with two magnetic transitions being observed at 2.1 K and 1.5 K. PrMg2Cu9 does not exhibit any magnetic phase transition down to 0.5 K. The other members being studied (R = Nd, Gd-Dy) all exhibit antiferromagnetic transitions at low temperatures ranging from 3.2 K for NdMg2Cu9 to 11.9 K for TbMg2Cu9. Whereas GdMg2Cu9 is isotropic in its paramagnetic state due to zero angular momentum (L = 0), all the other local-moment-bearing members manifest an anisotropic, planar magnetization in their paramagnetic states. To further study this planar anisotropy, detailed angular-dependent magnetization was carried out on magnetically diluted (Y0.99Tb0.01)Mg2Cu9 and (Y0.99Dy0.01)Mg2Cu9. Despite the strong, planar magnetization anisotropy, the in-plane magnetic anisotropy is weak and field-dependent. Finally, a set of crystal electric field parameters are proposed to explain the observed magnetic anisotropy.},
doi = {10.1103/PhysRevB.94.144434},
journal = {Physical Review B},
number = 14,
volume = 94,
place = {United States},
year = {2016},
month = {10}
}