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Tính Chất Hóa Học, Hình Thái, Cấu Trúc, Quang Học và Từ Tính của Các Hạt Nano LaFeO3 Pha Tạp Kim Loại Chuyển Tiếp Titanium (Ti)
Tóm tắt
Trong nghiên cứu này, các hạt nano LaFe1−xTixO3 (x = 0.0, 0.2, 0.4 và 0.6) được pha tạp titanium (Ti) và kim loại chuyển tiếp đã được tổng hợp thành công thông qua kỹ thuật tổng hợp thủy nhiệt với các tỷ lệ mol khác nhau là 0.2, 0.4 và 0.6. Các mẫu đã chuẩn bị được nghiền và anneal trong lò ở 600 ∘C trong 4 giờ. Phân tích nhiễu xạ tia X (XRD) xác nhận sự hình thành pha hình chóp orthorhombic của LaFeO3 và LaFeO3 pha tạp Ti. Phân tích định lượng đã được thực hiện thông qua các nghiên cứu tia X phân tán năng lượng (EDX). Các đặc điểm vi cấu trúc của hình thái bề mặt đã được kiểm tra bằng kính hiển vi điện tử quét phát xạ trường (FESEM). Hơn nữa, bề mặt nano tinh thể của LaFe1−xTixO3 pha tạp titanium (Ti) cũng được nghiên cứu thông qua phân tích kính hiển vi điện tử truyền ảnh độ phân giải cao (TEM). Sự gia tăng giá trị từ hóa ở nhiệt độ phòng đã được quan sát thông qua đường cong M–H được đo bằng máy đo từ hình mẫu rung (VSM). Hành vi từ tính yếu đã được phát hiện từ vòng suy luận. Từ vòng suy luận, trạng thái bão hòa xảy ra khi cường độ trường từ được áp dụng là 15 kOe.
Từ khóa
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