High pressure synthesis and characterization of the pyrochlore Dy2Pt2O7: A new spin ice material

doi:10.1088/1674-1056/ab7b58

Abstract The cubic pyrochlore Dy₂Pt₂O₇ was synthesized under 4 GPa and 1000℃ and its magnetic and thermodynamic properties were characterized by DC and AC magnetic susceptibility and specific heat down to 0.1 K. We found that Dy₂Pt₂O₇ does not form long-range magnetic order, but displays characteristics of canonical spin ice such as Dy₂Ti₂O₇, including (1) a large effective moment 9.64 μ_B close to the theoretical value and a small positive Curie-Weiss temperature θ_CW=+0.77 K signaling a dominant ferromagnetic interaction among the Ising spins; (2) a saturation moment ～4.5 μ_B being half of the total moment due to the local <111> Ising anisotropy; (3) thermally activated spin relaxation behaviors in the low (～1 K) and high (～20 K) temperature regions with different energy barriers and characteristic relaxation time; and most importantly, (4) the presence of a residual entropy close to Pauling's estimation for water ice.

Keywords: Dy₂Pt₂O₇ pyrochlore oxide spin ice high-pressure synthesis

Received: 09 February 2020
Revised: 25 February 2020
Accepted manuscript online:

PACS:	75.10.Jm	(Quantized spin models, including quantum spin frustration)
	75.47.Lx	(Magnetic oxides)
	75.30.-m	(Intrinsic properties of magnetically ordered materials)
	75.30.Cr	(Saturation moments and magnetic susceptibilities)

Fund: Project supported by the National Key R&D Program of China (Grant No. 2018YFA0305700), the National Natural Science Foundation of China (Grant Nos. 11834016, 11874400, and 11921004), the Beijing Natural Science Foundation, China (Grant No. Z190008), the Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (Grant No. QYZDB-SSW-SLH013), and the CAS Interdisciplinary Innovation Team. ZLD and HDZ acknowledge the support of Grant No. NSF-DMR-1350002. JSZ acknowledges the support of NSF DMR Grant No. 1729588.

Corresponding Authors: Jin-Guang Cheng
E-mail: jgcheng@iphy.ac.cn

Cite this article:

Qi Cui(崔琦), Yun-Qi Cai(蔡云麒), Xiang Li(李翔), Zhi-Ling Dun(顿志凌), Pei-Jie Sun(孙培杰), Jian-Shi Zhou(周建十), Hai-Dong Zhou(周海东), Jin-Guang Cheng(程金光) High pressure synthesis and characterization of the pyrochlore Dy₂Pt₂O₇: A new spin ice material 2020 Chin. Phys. B 29 047502

[1]	Ramirez A P 1994 Annu. Rev. Mater. Sci. 24 453
[2]	Greedan J E 2001 J. Mater. Chem. 11 37
[3]	Harris M J, Bramwell S T, McMorrow D F, Zeiske T and Godfrey K W 1997 Phys. Rev. Lett. 79 2554
[4]	Bramwell S T and Gingras M J P 2001 Science 294 1495
[5]	Ramirez A P, Hayashi A, Cava R J, Siddharthan R and Shastry B S 1999 Nature 399 333
[6]	Castelnovo C, Moessner R and Sondhi S L 2012 Annu. Rev. Condens. Matter Phys. 3 35
[7]	Rosenkranz S, Ramirez A P, Hayashi A, Cava R J, Siddharthan R and Shastry B S 2000 J. Appl. Phys. 87 5914
[8]	Jana Y M, Sengupta A and Ghosh D 2002 J. Mag. Mag. Mater. 248 7
[9]	den Hertog B C and Gingras M J P 2000 Phys. Rev. Lett. 84 3430
[10]	Zhou H D, Bramwell S T, Cheng J G, Wiebe C R, Li G, Balicas L, Bloxsom J A, Silverstein H J, Zhou J S, Goodenough J B and Gardner J S 2011 Nat. Commun. 2 478
[11]	Zhou H D, Cheng J G, Hallas A M, Wiebe C R, Li G, Balicas L, Zhou J S, Goodenough J B, Gardner J S and Choi E S 2012 Phys. Rev. Lett. 108 207206
[12]	Cai Y Q, Cui Q, Li X, Dun Z L, Ma J, Dela Cruz C R, Jiao Y Y, Liao J, Sun P J, Li Y Q, Zhou J S, Goodenough J B, Zhou H D and Cheng J G 2016 Phys. Rev. B 93 014443
[13]	Li X, Cai Y Q, Cui Q, Lin C J, Dun Z L, Matsubayashi K, Uwatoko Y, Sato Y, Kawae T, Lv S J, Jin C Q, Zhou J S, Goodenough J B, Zhou H D and Cheng J G 2016 Phys. Rev. B 94 214429
[14]	Hoekstra H R and Gallagher F 1968 Inorg. Chem. 7 2553
[15]	Tang Z, Li C Z, Yin D, Zhu B P, Wang L L, Wang J F, Xiong R, Wang Q Q and Shi J 2006 Acta Phys. Sin. 55 6532 (in Chinese)
[16]	Fukazawa H, Melko R G, Higashinaka R, Maeno Y and Gingras M J P 2002 Phys. Rev. B 65 054410
[17]	Matsuhira K, Hinatsu Y and Sakakibara T 2001 J. Phys.: Conden. Matter 13 L737
[18]	Snyder J, Ueland B G, Slusky J S, Karunadas H, Cava R J and Schiffer P 2004 Phys. Rev. B 69 064414
[19]	Shi J, Tang Z, Zhu B P, Huang P, Ying D, Li C Z, Wang Y and Wen H 2007 J. Mag. Mag. Mater. 310 1322
[20]	Snyder J, Ueland B G, Slusky J S, Karunadas H, Cava R J, Mizel A and Schiffer P 2003 Phys. Rev. Lett. 91 107201

[1]	A new transition metal diphosphide α-MoP₂ synthesized by a high-temperature and high-pressure technique Xiaolei Liu(刘晓磊), Zhenhai Yu(于振海), Jianfu Li(李建福), Zhenzhen Xu(徐真真), Chunyin Zhou(周春银), Zhaohui Dong(董朝辉), Lili Zhang(张丽丽), Xia Wang(王霞), Na Yu(余娜), Zhiqiang Zou(邹志强),Xiaoli Wang(王晓丽), and Yanfeng Guo(郭艳峰). Chin. Phys. B, 2023, 32(1): 018102.
[2]	Slight Co-doping tuned magnetic and electric properties on cubic BaFeO₃ single crystal Shijun Qin(覃湜俊), Bowen Zhou(周博文), Zhehong Liu(刘哲宏), Xubin Ye(叶旭斌), Xueqiang Zhang(张雪强), Zhao Pan(潘昭), and Youwen Long(龙有文). Chin. Phys. B, 2022, 31(9): 097503.
[3]	Critical behavior and effect of Sr substitution in double perovskite Ca₂CrSbO₆ Yuan-Yuan Jiao(焦媛媛), Jian-Ping Sun(孙建平), and Qi Cui(崔琦). Chin. Phys. B, 2021, 30(3): 037501.
[4]	Doping effect on the structure and physical properties of quasi-one-dimensional compounds Ba₉Co₃(Se_1-xS_x)₁₅ (x = 0-0.2) Lei Duan(段磊), Xian-Cheng Wang(望贤成), Jun Zhang(张俊), Jian-Fa Zhao(赵建发), Wen-Min Li(李文敏), Li-Peng Cao(曹立朋), Zhi-Wei Zhao(赵志伟), Changjiang Xiao(肖长江), Ying Ren(任瑛), Shun Wang(王顺), Jinlong Zhu(朱金龙), and Chang-Qing Jin(靳常青). Chin. Phys. B, 2021, 30(10): 106101.
[5]	Spin glassy behavior and large exchange bias effect in cubic perovskite Ba_0.8Sr_0.2FeO_3-δ Yu-Xuan Liu(刘宇轩), Zhe-Hong Liu(刘哲宏), Xu-Bin Ye(叶旭斌), Xu-Dong Shen(申旭东), Xiao Wang(王潇), Bo-Wen Zhou(周博文), Guang-Hui Zhou(周光辉), You-Wen Long(龙有文). Chin. Phys. B, 2019, 28(6): 068104.
[6]	A-site ordered quadruple perovskite oxides AA₃'B₄O₁₂ Youwen Long(龙有文). Chin. Phys. B, 2016, 25(7): 078108.
[7]	Magnetization plateaus and frequency dispersion of hysteresis on frustrated dipolar array Zhang You-Tian (张又天). Chin. Phys. B, 2015, 24(8): 087502.
[8]	HIGH-PRESSURE SYNTHESIS OF MgB₂ SUPER-CONDUCTOR WITH T_c ABOVE 39 K Li Shao-chun (李绍春), Zhu Jia-lin (朱嘉林), Yu Ri-cheng (禹日成), Li Feng-ying (李凤英), Liu Zhen-xing (刘振兴), Jin Chang-qing (靳常青). Chin. Phys. B, 2001, 10(4): 338-339.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Metrics
Related Articles

High pressure synthesis and characterization of the pyrochlore Dy2Pt2O7: A new spin ice material

Cite this article:

Online attention

High pressure synthesis and characterization of the pyrochlore Dy₂Pt₂O₇: A new spin ice material