Polycrystalline samples of R2O2CO3 (R = Pr, Nd, Gd, Tb, Dy, Ho, Er, and Yb) with a unique rare-earth bilayer of triangular lattice were synthesized and studied by DC and AC magnetic susceptibility. Data reveals various magnetic ground states including (i) a nonmagnetic ground state for the Pr sample; (ii) long-range magnetic ordering for the Nd, Gd, Tb, Dy, Ho, and Er samples. Besides the Gd sample, they also exhibit field-induced spin state transitions. More interestingly, a series of spin state transitions in the Nd and Dy samples could be attributed to the field-induced up-up-down spin state and the 2:1 canted spin state. Neutron powder diffraction measurements of the Er sample suggest a spiral spin structure below its TN; and (iii) a short-range ordering for the Yb sample. The disrupted interlayer interaction due to the shift of Yb3+ ions within the bilayer prevents long-range magnetic ordering down to 30 mK and makes it another Yb-related triangular lattice antiferromagnet that has the potential to realize a quantum spin liquid state.
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Moscow MV Lomonosov State Univ, Dept Chem, Leninskie Gory,House 1,Bldg 3,GSP 1, Moscow 119991, RussiaMoscow MV Lomonosov State Univ, Dept Chem, Leninskie Gory,House 1,Bldg 3,GSP 1, Moscow 119991, Russia
Morozkin, A. V.
Yapaskurt, V. O.
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Moscow MV Lomonosov State Univ, Geol Fac, Dept Petrol, Leninskie Gory, Moscow 119991, RussiaMoscow MV Lomonosov State Univ, Dept Chem, Leninskie Gory,House 1,Bldg 3,GSP 1, Moscow 119991, Russia
Yapaskurt, V. O.
Nirmala, R.
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Indian Inst Technol Madras, Chennai 600036, Tamil Nadu, IndiaMoscow MV Lomonosov State Univ, Dept Chem, Leninskie Gory,House 1,Bldg 3,GSP 1, Moscow 119991, Russia
Nirmala, R.
Quezado, S.
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Univ Fed Rio Grande do Norte, Dept Fis Teor & Expt, BR-59082970 Natal, RN, BrazilMoscow MV Lomonosov State Univ, Dept Chem, Leninskie Gory,House 1,Bldg 3,GSP 1, Moscow 119991, Russia
Quezado, S.
Malik, S. K.
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Univ Fed Rio Grande do Norte, Dept Fis Teor & Expt, BR-59082970 Natal, RN, BrazilMoscow MV Lomonosov State Univ, Dept Chem, Leninskie Gory,House 1,Bldg 3,GSP 1, Moscow 119991, Russia
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Ewha Womans Univ, Dept Phys, Seoul 120750, South Korea
Ewha Womans Univ, Div Nanosci, Seoul 120750, South KoreaKonkuk Univ, Dept Appl Phys, Chungju 380701, Chungbuk, South Korea
Oh, Su-Young
Chen, Xiang-Bai
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Konkuk Univ, Dept Appl Phys, Chungju 380701, Chungbuk, South KoreaKonkuk Univ, Dept Appl Phys, Chungju 380701, Chungbuk, South Korea
Chen, Xiang-Bai
Lee, D.
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Seoul Natl Univ, ReCOE & FPRD, Dept Phys & Astron, Seoul 151747, South KoreaKonkuk Univ, Dept Appl Phys, Chungju 380701, Chungbuk, South Korea
Lee, D.
Jang, S. -Y.
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Seoul Natl Univ, ReCOE & FPRD, Dept Phys & Astron, Seoul 151747, South KoreaKonkuk Univ, Dept Appl Phys, Chungju 380701, Chungbuk, South Korea
Jang, S. -Y.
Noh, T. W.
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Seoul Natl Univ, ReCOE & FPRD, Dept Phys & Astron, Seoul 151747, South KoreaKonkuk Univ, Dept Appl Phys, Chungju 380701, Chungbuk, South Korea