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首页> 外文期刊>Physical review >Magnetic behavior of T′-type Eu_2CuO_4 revealed by muon spin rotation and relaxation measurements
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Magnetic behavior of T′-type Eu_2CuO_4 revealed by muon spin rotation and relaxation measurements

机译：T'型EU_2CUO_4的磁力行为由MuOn旋转旋转和弛豫测量显示

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We performed muon-spin-rotalion/-relaxation measurements to investigate the magnetic behavior of T′-type Eu_2CuO_4 (ECO), which is the parent compound of electron-doped cuprate superconductors, and the effects of oxygen-reduction annealing on its magnetism. In as-sintered (AS) ECO. we clarified ihe development of magnetic correlations upon cooling below Y_N1 (= 265 K) as well as the coexistence of a dominant fluctuating spin slate and partially ordered spin state in the temperature range between ～150 K and T_N1. Upon further cooling, uniform long-range magnetic order was observed below Y_N2 = 110 K. which is close to (he ordering temperature of 115 K in T′-type La_2CuO_4 (LCO) [Phys. Rev. B 82. 180508(R) (2010)]. For oxygen-reduction-annealed ECO. a similar ordering sequence with the same T_N2 was observed but without the partially ordered spin stale. Therefore, the fluctuating spin slate over a wide temperature range and a T_N2 less lhan the Neel temperature (T_N2 ≈ T_N1 ) in T-type LCO are common features of the 7"-type parent R_2CuO_4 (RCO, R: rare-earth ion). The origin of the partially ordered spin stale in AS ECO is discussed from the viewpoint of chemical delect. Furthermore, we discuss the roles of electron doping and repairing defect in the observed effect of annealing on the magnetism of T'-type RCO.
机译：我们进行了μ旋转旋转/ - 雷中测量以研究T'型EU_2CuO_4（ECO）的磁性，其是电子掺杂铜制超导体的母体化合物，以及对其磁性的氧气还原退火的影响。在烧结（AS）ECO。我们阐明了在冷却以下Y_N1（= 265k）时的磁性相关性的发展，以及在〜150k和T_N1之间的温度范围内的主要波动旋转板岩和部分有序的旋转状态的共存。在进一步冷却后，在Y_N2 = 110K下方观察到均匀的远程磁性阶。接近（他在T'-Type La_2Cuo_4（LCO）中的115 k的温度为115 k的温度[phy]。Rev. B 82.180508（R） （2010）]。对于氧气还原退火的Eco。观察到具有相同T_N2的类似订购序列，但没有部分有序的旋转陈旧。因此，波动旋转在宽温度范围内和T_N2较少的振动温度较少（T_N2≈T_N1）在T型LCO中是7“型父母R_2CUO_4（RCO，R：稀土离子）的常见特征。从化学的观点来看，作为ECO的部分有序旋转陈旧的起源DELETORY。此外，我们讨论了电子掺杂和修复缺陷在T'型RCO的磁性的观察到效果中的作用。

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  • 来源
    《Physical review》 |2020年第4期|045116.1-045116.7|共7页
  • 作者

    M. Fujita; K. M. Suzuki; S. Asano; H. Okabe; A. Koda; R. Kadono; I. Watanabe;

  • 作者单位

    Institute for Materials Research Tohoku University 2-1-1 Katahira Aoba-ku Sendai 980-8577 Japan;

    Institute for Materials Research Tohoku University 2-1-1 Katahira Aoba-ku Sendai 980-8577 Japan;

    Department of Physics Graduate School of Science Tohoku University 6-3 Aoba Aramaki Aoba-ku Sendai 980-8578 Japan;

    Muon Science Laboratory Institute of Materials Structure Science High Energy Accelerator Research Organization (KEK) Tsukuba Ibaraki 305-0801 Japan;

    Muon Science Laboratory Institute of Materials Structure Science High Energy Accelerator Research Organization (KEK) Tsukuba Ibaraki 305-0801 Japan;

    Muon Science Laboratory Institute of Materials Structure Science High Energy Accelerator Research Organization (KEK) Tsukuba Ibaraki 305-0801 Japan;

    Meson Science Laboratory Nishina Center for Accelerator-Based Science RIKEN Wako Saitama 351-0198 Japan;

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