Colossal anisotropic resistivity and oriented magnetic domains in strained La0.325Pr0.3Ca0.375MnO3 films

Jiang, Tao; Yang, Shengwei; Zhou, Haibiao; Liu, Yu Kuai; Zhao, Wenbo; Feng, Lei; Hou, Yubin; Lu, Qingyou; Li, Xiaoguang

doi:10.1063/1.4878557

Cited by 11 publications

(4 citation statements)

References 25 publications

(45 reference statements)

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“…Here the doping ratio of Pr 3+ is selected as x = 0.3, so the content of Pr 3+ and La 3+ is approximately equal, which can result in much obvious EPS phenomenon [7]. Meanwhile, in order to only investigate the effect of the magnetic field on anisotropic transport behavior, the cubic STO single crystal with a lattice constant of a = 3.905 Å is chosen as the substrate, since it can provide an isotropic tensile stain on the LPCMO film [13,17]. Our results reveal that the magnetic field can induce a low resistance state which can be maintained after the removal of the magnetic field, showing a nonvolatile MR (defined by ΔR(H)/R(0) = [R(H) − R(0)]/R(0)) effect.…”

Section: Introductionmentioning

confidence: 99%

Magnetically induced nonvolatile magnetoresistance and resistance memory effect in phase-separated manganite thin films

Li¹,

Cao²,

Wang³

et al. 2017

J. Phys. D: Appl. Phys.

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We report the observation of magnetically induced resistance memory effect in a typical electronic phase-separated manganite La5/8−xPrxCa3/8MnO3 (x = 0.3) thin film. In the hysteresis region of metal-to-insulator transition, the resistance exhibits a sharp drop with the application of magnetic field and maintains the low resistance state after the removal of field, showing a nonvolatile magnetoresistance effect. The high resistance state can be recovered until the temperature is warmed. More explicit measurements at the hysteresis region exhibit the non-volatility and irreversibility of magnetoresistance, which can be ascribed to the percolative feature in the electronic phase-separated manganite. The origin and potential applications of these interesting effects are discussed.

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Section: Introductionmentioning

confidence: 99%

Magnetically induced nonvolatile magnetoresistance and resistance memory effect in phase-separated manganite thin films

Li¹,

Cao²,

Wang³

et al. 2017

J. Phys. D: Appl. Phys.

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“…Jiang 等 [29] 研究了不同厚度 La 0.325 Pr 0.3 Ca 0.375 MnO 3 薄膜的磁性与电阻各向异性, 结果表明, 对于 30 nm 厚的薄膜, 其各向异性电阻率(anisotropic resistivity, AR) 非常大(~10 5 %); 对于120 nm 厚的薄膜, 由于应变弛豫, 它的 AR 最大值显著降低(~2×10 3 %)。Nori 等 [30] 利用脉冲激光沉积法在 Si(100)上制备了晶粒尺寸为 20~60 nm 的 La 0.7 Sr 0.3 MnO 3 薄膜, 并对其磁性能进行了表征。结果表明, 晶粒致密排列的 La 0.7 Sr 0.3 MnO 3 薄膜居里温度为 349 K, 而柱状晶粒组成的薄膜居里温度为 355 K, 这是目前已报道的沉积在 Si 衬底上 LSMO 薄膜最高的居里温度。最近, 人们对纳米结构的钙钛矿锰氧化物薄膜的电磁输运特性亦进行了研究, 如 Hirooka 等 [31] 利用原子力显微镜(AFM)辅助化学湿法刻蚀技术制备了(La,Ba)MnO 3 纳米桥结构, 发现纳米桥的磁电阻呈现 2 个数量级的变化。近年来, Guo 等 [32] 采用 EBL 技术制备了不同宽度的 (La,Ca)MnO 3 薄膜微桥结构, 电输运特性测量结果表明: 薄膜微桥宽度在 0.50 µm 以下, M-I 相变消失, 并且出现反常的正磁电阻现象。…”

Section: 钙钛矿锰氧化物薄膜材料unclassified

Advances on Low-dimensional Perovskite Manganite Nanostructures

Li¹,

Liang²,

Wu³

et al. 2015

Journal of Inorganic Materials

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In the perovskite-type manganese oxides, multi-degrees of freedom such as charge, spin, orbital and crystal lattice coexist simultaneously, and the strong completing interactions among them result in a series of novel physical phenomena such as colossal magnetoresistance effect, giant magnetic entropy effect, metal-insulator transition, electronic phase separation and charge/orbital ordering, which make them become attractive issues in condensed matter physics. Advances in integration and miniaturization of the electronic devices have resulted in their feature sizes continued to be decreased, and now the feature sizes of electronic devices based on perovskite-type manganese oxides are down-scaled into nanometered sizes. At nanoscale perovskite-type manganese oxides exhibit apparent size effects and possess the electrical and magnetic transport properties that are different from their bulk and film counterparts, which have important applications in the fields of a new generation of microelectronic devices. In recent years, many advances have been made in fabrication, microstructural characterization electrical and magnetic property measurements of the low-dimensional perovskite manganite nanostructures, and also in the

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“…The PS is characterized by the competition between the ferromagnetic metallic (FMM) phase and the antiferromagnetic insulating (AFI) phase in perovskite-structured manganites. 15 The transition, ranging from the AFI-dominant PS to the FMM-dominant PS in manganites, also named the melting transition under the high magnetic field condition, which were usually explored with microscopy techniques. 16,17 However, this electrical method is not applicable for the phase at nanometer scale due to the extremely strict measurement condition of the larger melting magnetic field for manganites.…”

Section: Introductionmentioning

confidence: 99%

“… 18–21 Although the electrical transport resistivity measurements can characterize the PS and AMR, it is inconvenient because they all have to make contacts to the sample. 15 Thus, a new method in the noncontact and nondestructive fashion is highly desired to probe the transport dynamics of the manganites.…”

Section: Introductionmentioning

confidence: 99%

Anisotropic terahertz transmission induced by the external magnetic field in La0.67Ca0.33MnO3 film

Mei

Zhang

et al. 2021

Structural Dynamics

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A systemic investigation of the terahertz (THz) transmission of La 0.67 Ca 0.33 MnO 3 film on the (001)-oriented NdGaO 3 substrate under external magnetic field and low temperature have been performed. The significant THz absorption difference between the out-of-plane and the in-plane magnetic field direction is observed, which is consistent with the electrical transport measurement using the standard four-probe technique. Furthermore, we find that the complex THz conductivities can be reproduced in terms of the Drude Smith equation as the magnetic field is perpendicular to the film plane, whereas it deviates from this model when the in-plane magnetic field is applied. We suggest that such anisotropies in THz transport dynamics have close correspondences with the phase separation and anisotropic magnetoresistance effects in the perovskite-structured manganites. Our work demonstrates that the THz time-domain spectroscopy (TDS) can be an effective non-contact method for studying the magneto-transport properties of the perovskite-structured manganites.

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Colossal anisotropic resistivity and oriented magnetic domains in strained La_0.325Pr_0.3Ca_0.375MnO₃ films

Cited by 11 publications

References 25 publications

Magnetically induced nonvolatile magnetoresistance and resistance memory effect in phase-separated manganite thin films

Magnetically induced nonvolatile magnetoresistance and resistance memory effect in phase-separated manganite thin films

Advances on Low-dimensional Perovskite Manganite Nanostructures

Anisotropic terahertz transmission induced by the external magnetic field in La0.67Ca0.33MnO3 film

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