Ca1-xNdxMnO3 (x = 0, 0,2 ve 0,4) Örneklerinin Yapısal ve Manyetik Özelliklerinin İncelenmesi

Öz

Bu çalışma, farklı oranlarda Neodimyum (Nd) ile katkılanan CaMnO3 örneklerinin yapısal ve manyetik özelliklerini araştırmaktadır. Ca1-xNdxMnO3 (x = 0, 0,2 ve 0,4) örnekleri, katı hal reaksiyon yöntemi ile sentezlenmiştir ve X-ışını Difraksiyonu (XRD) kullanılarak yapısal analizleri gerçekleştirilmiştir. Nd katkısının artışıyla birlikte, CaMnO3 fazının yapısında değişiklikler gözlemlenmiştir. SEM sonuçları, Nd katkısının tanecik boyutu üzerinde belirgin bir etkisi olduğunu ve katkılamanın taneciklerin küçülmesine yol açtığını ortaya koymaktadır. Manyetik ölçümler, Fiziksel Özellikler Ölçüm Sistemi (PPMS) kullanılarak gerçekleştirilmiştir. Elde edilen sonuçlar, Nd katkısının, Mn⁺3-O-Mn+4 çift-değişim etkileşimlerinin ideal düzlemden sapmasına yol açarak, manyetik düzenin antiferromanyetik yapıdan kısmen ferromanyetik yapıya doğru kaymasına zemin hazırlamıştır.

Anahtar Kelimeler

• CaMnO3
• yapısal özellikler
• manyetik özellikler

Investigation of the Structural and Magnetic Properties of Ca1-xNdxMnO3 (x = 0, 0.2, and 0.4) Samples

Öz

This study investigates the structural and magnetic properties of CaMnO3 samples doped with different ratios of Neodymium (Nd). Ca1-xNdxMnO3 (x = 0, 0.2, and 0.4) samples were synthesized using the solid-state reaction method, and their structural analyses were performed using X-Ray Diffraction (XRD). With increasing Nd doping, changes were observed in the structure of the CaMnO3 phase. SEM results reveal that Nd doping has a noticeable effect on grain size, leading to a reduction in grain dimensions. Magnetic measurements were conducted using a Physical Property Measurement System (PPMS). The results indicate that Nd doping causes deviations in the Mn3+-O-Mn4+ double-exchange interactions from the ideal plane, facilitating a shift in the magnetic order from an antiferromagnetic structure to a partially ferromagnetic structure.

Anahtar Kelimeler

• CaMnO3
• structural properties
• magnetic properties

Kaynakça

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