Magnetoresistive properties of Ni-doped La0.7Sr0.3MnO3 manganites

Ahmed, Ahmed Mohamed; Mohamed, Abd El-Moez A.; Abdellateef, Medhat Abdelrady; El-Ghanny, H. A. Abd

doi:10.1007/s12598-015-0465-x

Cited by 24 publications

(6 citation statements)

References 49 publications

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“…Dengan mengetahui dimensi sampel, data resistansi yang diperoleh dapat diolah menjadi data resistivitas menggunakan persamaan (1) Resistivitas sampel terlihat meningkat dengan bertambahnya doping Ni pada temperatur di bawah temperatur ruang. Meningkatnya resistivitas sampel saat doping Ni bertambah juga ditunjukkan oleh penelitain Ahmed et al [8].…”

Section: Hasil Dan Pembahasanunclassified

“…Selain dipengaruhi oleh semakin sulitnya proses tunnel elektron saat ukuran kristalit sampel menurun, peningkatan resistivitas sampel saat doping Ni meningkat juga dipengaruhi oleh penurunan rasio Mn 3+ /Mn 4+ [8]. Berkurangnya jumlah ion Mn 3+ menyebabkan turunnya peluang untuk terjadi interaksi Double Exchange karena ion Mn 3+ merupakan ion yang berkontribusi terhadap jumlah pembawa muatan.…”

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“…Banyak penelitian dilakukan dengan memberikan doping pada site Mn [5][6][7][8]. Penelitian yang dilakukan umumnya menggunakan metode sintesa solid state reaction dan menunjukkan bahwa pemberian doping (Fe, Cu, Ti, dan Ni) pada site Mn material mixed valence manganites meningkatkan resistivitas material.…”

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“…Penelitian yang dilakukan umumnya menggunakan metode sintesa solid state reaction dan menunjukkan bahwa pemberian doping (Fe, Cu, Ti, dan Ni) pada site Mn material mixed valence manganites meningkatkan resistivitas material. Hasil penelitian Ahmed et al menunjukkan bahwa pemberian doping Ni juga berpemgaruh terhadap parameter kisi kristal karena vakansi oksigen yang disebabkan oleh jari-jari ionik ion Ni 2+ yang lebih besar dari ion Mn [8]. Pada penelitian kali ini, material LSMO doping Ni yang diteliti disintesa dengan metode sol gel.…”

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Pengaruh Doping Ni Terhadap Resistivitas Senyawa LA0.67SR0.33MN1-XNIXO3

Widyaiswari

Kurniawan

Imaduddin

et al. 2016

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AbstrakPenelitian terhdap sifat listrik material lanthanum manganat telah dilakukan. Perubahan sifat listrik senyawa mixed valence manganites dipengaruhi oleh pemberian doping pada site La dan Mn. Dalam penelitian kali ini, senyawa La0,67Sr0,33Mn1-xNixO3 dibuat dengan metode sintesa sol gel. Senyawa yang dibuat kemudian dikarakterisasi dengan menggunakan X-Ray Diffractometer (XRD) untuk mengetahui struktur sampel, selanjutnya diuji dengan menggunakan cryogenic magnetometer untuk mengukur resistivitas sampel sebagai fungsi temperatur. Hasil karakterisasi XRD menunjukkan bahwa senyawa yang dibentuk memiliki struktur Rhombohedral dengan space group R-3c dan ukuran kristalit kurang dari 100 nm. Pemberian doping Ni tidak merubah struktur kristal namun berpengaruh terhadap penurunan parameter kisi kristal dan ukuran kristalit. Hasil pengukuran resistivitas menunjukkan bahwa senyawa yang diuji berperilaku sebagai isolator dan doping Ni meningkatkan resistivitas sampel. Kata-kata kunci:Resistivitas, mixed valence manganites, doping Ni, metode sol gel. AbstractTransport properties of lanthanum manganites have been studied. Mixed valence manganites material transport properties changed with doping at La and Mn site. In this study, La0,67Sr0,33Mn1-xNixO3 material was synthesized using sol gel method. These samples were characterized using X-Ray Diffractometer (XRD) to investigate the structure of samples. While the resistivity of samples as a function of temperature was measured using cryogenic magnetometer. XRD result showed that samples were having Rhombohedral structure with R-3c space group and crystallite size smaller than 100 nm. Ni doping have not changed crystal structure but decreased lattice parameter and size of the crystal. Resistivity measurement result showed insulator behavior of the samples and Ni doping enhanced the resistivity of samples.

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Pengaruh Doping Ni Terhadap Resistivitas Senyawa LA0.67SR0.33MN1-XNIXO3

Widyaiswari

Kurniawan

Imaduddin

et al. 2016

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“…The doped rare earth manganese perovskites with a general compositional formula R 1 − x A x MnO 3 (R is a rare earth element and A is a divalent alkaline earth metal) have been extensively investigated due to their CMR properties [1][2][3][4][5]. The CMR phenomena in this system are generally understood in terms of double-exchange mechanism and Jahn-Teller distortions of Mn 3+ ions [6][7][8].…”

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confidence: 99%

Electrical transport and magnetoresistance of double layered CMR manganites R_1.2Sr_1.8Mn₂O₇(R = La, Pr, Sm)

Reddy

2017

Materials Science-Poland

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Polycrystalline bulk samples of double layered (DL) colossal magnetoresistive (CMR) manganites R 1.2 Sr 1.8 Mn 2 O 7 (R = La, Pr, Sm) were prepared by sol-gel method to study the effect of size of lanthanide ion on their magnetotransport properties. The electrical resistivity of the samples was investigated in the temperature range of 70 K to 300 K at different magnetic fields. The samples LSMO and PSMO show insulator-to-metal transition (IMT) behavior, while SSMO sample exhibits insulating behavior in the entire temperature range with a very large value of resistivity. The insulator-to-metal transition temperature (T IM ) decreases from 123 K (LSMO) to 90 K (PSMO) and disappears in SSMO sample. To explain the electrical transport above T IM , the temperature dependent resistivity data (T > T IM ) of all the samples were fitted to the equations of different conduction models. The results indicate that the conduction at T > T IM is due to Mott variable range hopping (VRH) mechanism in the LSMO and PSMO samples, while Efros-Shkloskii (ES) type of VRH model dominates the conduction process in the SSMO sample. All the three samples show increasing magnetoresistance (MR) even below T IM and the maximum MR is shown by LSMO (39 % at 75 K, 3 T).

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Magnetic properties and evolution of magnetoresistance effect in Pr0.75Na0.05K0.20Mn1–xFexO3 with $$0\le x\le$$ 0.04

Aziz

Ibrahim²,

Rajmi³

et al. 2022

Appl. Phys. A

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Magnetoresistive properties of Ni-doped La0.7Sr0.3MnO3 manganites

Cited by 24 publications

References 49 publications

Pengaruh Doping Ni Terhadap Resistivitas Senyawa LA0.67SR0.33MN1-XNIXO3

Pengaruh Doping Ni Terhadap Resistivitas Senyawa LA0.67SR0.33MN1-XNIXO3

Electrical transport and magnetoresistance of double layered CMR manganites R_1.2Sr_1.8Mn₂O₇(R = La, Pr, Sm)

Magnetic properties and evolution of magnetoresistance effect in Pr0.75Na0.05K0.20Mn1–xFexO3 with $$0\le x\le$$ 0.04

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Magnetoresistive properties of Ni-doped La0.7Sr0.3MnO3 manganites

Cited by 24 publications

References 49 publications

Pengaruh Doping Ni Terhadap Resistivitas Senyawa LA0.67SR0.33MN1-XNIXO3

Pengaruh Doping Ni Terhadap Resistivitas Senyawa LA0.67SR0.33MN1-XNIXO3

Electrical transport and magnetoresistance of double layered CMR manganites R1.2Sr1.8Mn2O7(R = La, Pr, Sm)

Magnetic properties and evolution of magnetoresistance effect in Pr0.75Na0.05K0.20Mn1–xFexO3 with $$0\le x\le$$ 0.04

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Electrical transport and magnetoresistance of double layered CMR manganites R_1.2Sr_1.8Mn₂O₇(R = La, Pr, Sm)