Anomalous Magnetic Phase Diagrams of HoB₂C₂: Antiferroquadrupolar Ordering in the Magnetic Phase

Unusual antiferromagnetic properties affected by antiferroquadrupolar interaction in TbB2C2

“…DyB 2 C 2 shows an AFQ ordering at T Q ¼ 24:7 K above an antiferromagnetic (AFM) transition at T N ¼ 15:3 K [1]. An AFQ order in HoB 2 C 2 coexists with an AFM order below T Q ¼ 4:5 K [2]. For TbB 2 C 2 ; an AFM order realizes at T N ¼ 21:7 K [3].…”

Development of magnetic correlations around the transition temperatures in ErB2C2

“…Of this system, we make much account of the long periodic magnetic states in RB 2 C 2 (R=Ho, Tb and Er), because the periodicities in the c-plane are nearly the same [2][3][4][5]. The close periodicity in spite of the different 4f ground states implies that the long periodicity originates in some common mechanism in RB 2 C 2 ; therefore, the long periodic states are worthy of detailed investigation.…”

“…The tetragonal RB 2 C 2 (R=rare earth) compounds show characteristic and diversified magnetic properties due to competition between antiferroquadrupolar (AFQ) and antiferromagnetic (AFM) interactions [1][2][3]. Of this system, we make much account of the long periodic magnetic states in RB 2 C 2 (R=Ho, Tb and Er), because the periodicities in the c-plane are nearly the same [2][3][4][5].…”

Magnetic phase diagrams of Ce1−M B2C2 (M=La and Lu)

“…eel temperature T N decreases linearly for xp0:20: However, concentration x dependence of the transition temperature changes the slope at xB0:25; and spin-glass transitions are observed for xX0:25: The origin of the spin-glass behavior will be discussed. r RB 2 C 2 (R=rare earth) compounds, such as DyB 2 C 2 ; HoB 2 C 2 and TbB 2 C 2 ; have been attracting a lot of interest [1][2][3]. Because of the coexistence and competition of antiferroquadrupolar (AFQ) ordering and antiferromagnetic (AFM) ordering, these compounds show a variety of magnetic behavior.…”

“…RB 2 C 2 (R=rare earth) compounds, such as DyB 2 C 2 ; HoB 2 C 2 and TbB 2 C 2 ; have been attracting a lot of interest [1][2][3]. Because of the coexistence and competition of antiferroquadrupolar (AFQ) ordering and antiferromagnetic (AFM) ordering, these compounds show a variety of magnetic behavior.…”