Unconventional magnetic transitions in the mineral clinoatacamite Cu 2Cl(OH) 3

X. G. Zheng; T. Kawae; Y. Kashitani; C. S. Li; N. Tateiwa; K. Takeda; H. Yamada; C. N. Xu; Y. Ren

doi:10.1103/PhysRevB.71.052409

Unconventional magnetic transitions in the mineral clinoatacamite Cu ₂Cl(OH) ₃

X. G. Zheng
, T. Kawae
, Y. Kashitani
, C. S. Li
, N. Tateiwa
, K. Takeda
, H. Yamada
, C. N. Xu
, Y. Ren

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

113 Citations (Scopus)

Abstract

Unconventional magnetic properties are found for a quantum spin system of mineral clinoatacamite, Cu ₂Cl(OH) ₃. Clinoatacamite is found to undergo an antiferromagnetic transition at 18.1 K with a small entropy fall (0.05R ln 2). At temperatures below 6.4 K, it transits into a disordered spin-glass-like state but with large specific heat anomalies. The entire entropy fall for the spin system is about 0.31R ln 2, which is smaller than those for dipolar spin ice (0.67R ln 2) and for ice I _h (0.71R ln 2). Geometric frustration for the quantum Cu ²⁺ spins is suggested based on its crystal structure, magnetization, and specific heat studies. ©2005 The American Physical Society.

Original language	English
Article number	052409
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	71
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.71.052409
Publication status	Published - Feb 2005
Externally published	Yes

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@article{d44f6e4987e94c50854d151617aa7cdd,

title = "Unconventional magnetic transitions in the mineral clinoatacamite Cu 2Cl(OH) 3",

abstract = "Unconventional magnetic properties are found for a quantum spin system of mineral clinoatacamite, Cu 2Cl(OH) 3. Clinoatacamite is found to undergo an antiferromagnetic transition at 18.1 K with a small entropy fall (0.05R ln 2). At temperatures below 6.4 K, it transits into a disordered spin-glass-like state but with large specific heat anomalies. The entire entropy fall for the spin system is about 0.31R ln 2, which is smaller than those for dipolar spin ice (0.67R ln 2) and for ice I h (0.71R ln 2). Geometric frustration for the quantum Cu 2+ spins is suggested based on its crystal structure, magnetization, and specific heat studies. {\textcopyright}2005 The American Physical Society.",

author = "Zheng, \{X. G.\} and T. Kawae and Y. Kashitani and Li, \{C. S.\} and N. Tateiwa and K. Takeda and H. Yamada and Xu, \{C. N.\} and Y. Ren",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected]. ",

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TY - JOUR

T1 - Unconventional magnetic transitions in the mineral clinoatacamite Cu 2Cl(OH) 3

AU - Zheng, X. G.

AU - Kawae, T.

AU - Kashitani, Y.

AU - Li, C. S.

AU - Tateiwa, N.

AU - Takeda, K.

AU - Yamada, H.

AU - Xu, C. N.

AU - Ren, Y.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2005/2

Y1 - 2005/2

N2 - Unconventional magnetic properties are found for a quantum spin system of mineral clinoatacamite, Cu 2Cl(OH) 3. Clinoatacamite is found to undergo an antiferromagnetic transition at 18.1 K with a small entropy fall (0.05R ln 2). At temperatures below 6.4 K, it transits into a disordered spin-glass-like state but with large specific heat anomalies. The entire entropy fall for the spin system is about 0.31R ln 2, which is smaller than those for dipolar spin ice (0.67R ln 2) and for ice I h (0.71R ln 2). Geometric frustration for the quantum Cu 2+ spins is suggested based on its crystal structure, magnetization, and specific heat studies. ©2005 The American Physical Society.

AB - Unconventional magnetic properties are found for a quantum spin system of mineral clinoatacamite, Cu 2Cl(OH) 3. Clinoatacamite is found to undergo an antiferromagnetic transition at 18.1 K with a small entropy fall (0.05R ln 2). At temperatures below 6.4 K, it transits into a disordered spin-glass-like state but with large specific heat anomalies. The entire entropy fall for the spin system is about 0.31R ln 2, which is smaller than those for dipolar spin ice (0.67R ln 2) and for ice I h (0.71R ln 2). Geometric frustration for the quantum Cu 2+ spins is suggested based on its crystal structure, magnetization, and specific heat studies. ©2005 The American Physical Society.

UR - https://www.scopus.com/pages/publications/15744390749

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U2 - 10.1103/PhysRevB.71.052409

DO - 10.1103/PhysRevB.71.052409

M3 - RGC 21 - Publication in refereed journal

SN - 1098-0121

VL - 71

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 5

M1 - 052409

ER -