There are several sources from which researchers can download/ read research papers for free. Researchers can download almost any scientific paper in PDF format through these legitimate websites. In case, you are not able to download any particular research paper, you can reach the authors of the research paper through email. The authors will be more than happy to share their research paper.
Also, read Tips for publishing in high-impact factor journals,
Difference b/w journal paper, conference paper & Book chapter
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Download research papers for free
1) DOAJ
DOAJ is an extensive index of diverse open-access journals from around the world, committed to ensuring quality content is freely available online for everyone.
All DOAJ services are free of charge including being indexed. All data is freely available.
Articles are searchable by author or title, ISSN, subject, and journal title.
| Journals | 18969 |
| Languages | 80 |
| Article Records | 8,600,594 |
| Countries Represented | 132 |
The official website of DOAJ is: https://doaj.org/
2) Google Scholar
Google Scholar is a freely accessible web search engine that indexes scholarly literature’s full text or metadata across multiple disciplines.
| Owned by | |
| Multiple Languages | Yes |
The official website of Google Scholar is: https://scholar.google.com/
3) ReserchGate
ResearchGate is a professional network for scientists and researchers to share papers, ask and answer questions, and find collaborators. Researchers and scientists post PDFs of their articles on ResearchGate, so it is a source of free scholarly articles.
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The official website is https://www.researchgate.net/
4) PubMed
PubMed is a free search engine for searching MEDLINE, the most popular bibliographic database in the health and medical sciences. It contains more than 35 million citations for biomedical literature from MEDLINE, life science journals, and online books.
The official website of PubMed is https://pubmed.ncbi.nlm.nih.gov/
5. Arxiv
ArXiv is a free distribution service and an open-access archive for 2,205,657 scholarly articles in the fields of physics, mathematics, computer science, quantitative biology, quantitative finance, statistics, electrical engineering, systems science, and economics. Researchers can download and read these research articles free of cost.
The official website of Arxiv is https://arxiv.org/
Dr. Sunny is an Assistant Professor in higher education. He has completed his Ph.D. He has a depth of knowledge in the research field and in higher education.